Abstract: The article presents the discussion of medical knowledge about yellow fever during an epidemic episode that occurred in the city of Mérida and other towns in the state of Yucatán between 1911 and 1912. This work was prepared based on the scientific reports from physicians who conducted research on this disease and malaria. The Statistical Bulletin was reviewed to contrast the figures provided by both scientists and health authorities. Regarding epidemic episodes, the reports were critical of the provisions of the health authorities because they did not constantly monitor susceptible people. On the other hand, the origin of the condition broke with the postulates in the medical literature. In addition, the clinical manifestations of the patients in the interior generated a debate on the methods for diagnosis through of laboratory analysis and therapy.

Resumen: Este artículo presenta la discusión de los conocimientos médicos sobre la fiebre amarilla durante un episodio epidémico que se presentó en la ciudad de Mérida y otros poblados del estado de Yucatán, entre los años de 1911 y 1912. Este trabajo se elaboró con base en los reportes científicos de los médicos que realizaron investigaciones sobre esta enfermedad y el paludismo. Se revisó el Boletín de Estadística para contrastar las cifras proporcionadas tanto por los científicos como por las autoridades sanitarias. En cuanto a los episodios epidémicos, los reportes eran críticos con las disposiciones de las autoridades sanitarias porque no hacían un seguimiento constante de las personas susceptibles. Por otra parte, el origen del padecimiento rompía con los postulados de la literatura médica. Además, las manifestaciones clínicas de los enfermos del interior generaron un debate sobre los métodos para el diagnóstico a través de los análisis de laboratorio y la terapéutica.

ABSTRACT This study aimed to determine the coexistence and food sources of adult mosquitoes (Diptera: Culicidae) in a rural health center in Piura, Peru by using a descriptive cross-sectional design. Entomological techniques were used to capture and identify mosquitoes, and molecular biotechnology techniques were used to identify food sources. A total of 793 specimens of the Culex and Aedes genera were found coexisting, 789 (99.5%) were Culex quinquefasciatus, 607 (76.9%) were males and 182 (23.1%) were females. Likewise, 4 (100%) corresponded to Aedes aegypti females. The food sources of Aedes aegypti were Homo sapiens sapiens, and Homo sapiens sapiens and Canis familiaris were the food sources of Culex quinquefasciatus. This study provides evidence that rural health centers could be acting as foci of arbovirosis, with the risk that people who come for different ailments could contract diseases transmitted by C. quinquefasciatus and A. aegypti.

RESUMEN Con el objetivo del estudio fue determinar la coexistencia y fuentes de alimentación de mosquitos adultos (Diptera: Culicidae) en un centro de salud rural de Piura en Perú, se realizó un estudio descriptivo transversal. Se usaron técnicas entomológicas para capturar e identificar mosquitos, y técnicas de biotecnología molecular para identificar las fuentes de alimentación. Un total de 793 ejemplares de los géneros Culex y Aedes se encontraron coexistiendo, 789 (99,5%) corresponden a Culex quinquefasciatus, 607 (76,9%) fueron machos y 182 (23,1%) hembras. Así mismo, 4 (100%) corresponden a Aedes aegypti hembras. Las fuentes de alimentación de Aedes aegypti fueron Homo sapiens sapiens, y de Culex quinquefasciatus fueron Homo sapiens sapiens y Canis familiaris. Este estudio proporciona evidencia de que los centros de salud rurales estarían actuando como focos de arbovirosis, existiendo el riesgo de que personas que acuden por distintas dolencias, puedan contraer enfermedades transmitidas por C. quinquefasciatus y A. aegypti.

ABSTRACT Introduction: Chikungunya virus (CHIKV) is an alphavirus with a single-stranded RNA genome belonging to the Togaviridae family. It is transmitted through the bite of mosquitoes of the Aedes sp. genus and is characterized by fever and disabling joint pain. Objetive: Determine the clinical and epidemiological characteristics of the chikungunya virus in pediatric patients who attended a Regional Hospital in Paraguay between January and June 2023. Materials and method: Quantitative, observational, descriptive cross-sectional study. All patients with variables of interest were included in the study; sex, age, origin, clinical findings and atypical symptoms. Results: A total of 465 clinical records of patients with confirmed chikungunya were reviewed. The minimum age of the patients was four days, and the maximum was 17 years; half of the patients were between 1 and 10 years of age. Male predominance in 52.7%, patients from urban areas in 72.5%. 62.6% had a typical presentation of chikungunya infection, and 37.4% had an atypical presentation. Fever, polyarthralgia, myalgia, headache, vomiting, and nausea predominated in the usual manner. In the atypical form, alterations of the cardiovascular system, bleeding dyscrasias, and pneumonia, among others, predominate. 4.3% presented complications, including encephalitis-meningoencephalitis and myocarditis. There was a death rate of 10.8%. Conclusion: Male sex predominated, coming from urban areas with typical presentation of chikungunya, with predominant symptoms of fever, polyarthralgia, and myalgia. Atypical form alteration of the cardiovascular system, bleeding dyscrasias, pneumonia. 4.3% presented complications, 10.8% died.

RESUMEN Introducción: El virus chikungunya (CHIKV), es un alfavirus con genoma de ARN monocatenario, perteneciente a la familia Togaviridae, transmitido a través de la picadura de mosquitos del género Aedes sp., caracterizada por fiebre y dolores articulares incapacitantes. Objetivo: Determinar las características clínicas y epidemiológicas del virus chikungunya en pacientes pediátricos que acudieron a un Hospital Regional de Paraguay entre enero y junio del 2023. Material y Métodos: Estudio cuantitativo, observacional, descriptivo de corte transversal. Se incluyeron en el estudio todos los pacientes que presenten variables de interés; sexo, edad, procedencia, hallazgos clínicos y síntomas atípicos. Resultados: Se ha realizado la revisión de 465 fichas clínicas de pacientes con cuadro confirmado de chikungunya. La edad mínima de los pacientes fue de 4 días y la máxima de 17 años, la mitad de los pacientes estuvieron ubicados entre 1 y 10 años de edad. El 62,6% tuvo una presentación típica del cuadro de infección por chikungunya, el 37,4% tuvo una forma de presentación atípica. El 4,3% presentó complicaciones entre las que se citan encefalitis-meningoencefalitis y miocarditis. El 10,8% tuvo desenlace fatal, obitó. Conclusión: En cuanto a los datos demográficos, hubo predominio del sexo masculino y procedencia urbana. En cuanto a la presentación clínica, se reportaron formas típicas con fiebre, polialtralgias y mialgias. Las formas atípicas se presentaron con alteración del sistema cardiovascular, discrasia sanguínea y neumonías asociadas. Los casos que se consideraron complicados representan el 4,3% de la muestra y fue del 10,8% la mortalidad.

RESUMEN Introducción: Los brotes recurrentes de dengue subrayan la necesidad de abordajes más efectivos en la prevención y control de vectores. A menudo, las intervenciones se centran en un enfoque biomédico y de promoción de la salud desde un enfoque individual, sin integrar factores socioambientales ni ser evaluados científicamente Objetivo: Evaluar el impacto de la recolección de residuos domésticos de gran tamaño sobre potenciales criaderos de mosquitos transmisores del dengue en Asunción, Paraguay durante los años 2017 a 2021. Material y métodos: Estudio cuasiexperimental, longitudinal, donde se encuestaron 350 hogares, como línea de base durante el 2017 y una línea de cierre en 108 hogares en 2021. Se utilizó el método de Diferencia en Diferencia (DID) para comparar la presencia de criaderos antes y después de la intervención en 43 hogares intervenidos y 65 no intervenidos. Resultados: La recolección diferenciada fue utilizada principalmente por aquellos hogares que tenían una gran cantidad de residuos sólidos de gran tamaño, pero no para deshacerse de todos estos objetos, sino sólo de una parte (DID de -52% en el número total de criaderos y DID de 1% en número de hogares con criaderos). Encontramos una reducción significativa en el número de total de criaderos de gran tamaño, pero no observamos diferencias en el número total de hogares con criaderos. Factores subjetivos, como la creencia de que los objetos en desuso podrían llegar a ser útiles en el futuro explicaban en gran medida su presencia en los hogares, incluso con el servicio disponible. Conclusiones: El enfoque de la gestión municipal en los residuos voluminosos puede contribuir a la prevención del dengue por el hecho de que no constituyen residuos de generación rápida en los hogares, y su eliminación puede tener un impacto relativamente duradero. El factor subjetivo relacionado con la presencia de estos criaderos en los hogares debe ser objeto de mayores estudios.

ABSTRACT Introduction: Recurrent dengue outbreaks underscore the need for more effective approaches to vector prevention and control. Often, interventions focus on a biomedical and health promotion approach from an individual approach, without integrating socio-environmental factors or being scientifically evaluated. Objetive: To evaluate the impact of large household waste collection on potential breeding sites of dengue-transmitting mosquitoes in Asuncion, Paraguay during the years 2017 to 2021. Material and methods: Quasi-experimental, longitudinal study, where 350 households were surveyed, as a baseline during 2017 and a closing line in 108 households in 2021. The Difference-in-Difference (DID) method was used to compare the presence of breeding sites before and after the intervention in 43 intervened and 65 non-intervened households. Results: Differentiated collection was mainly used by those households that had a large amount of large solid waste, but not to dispose of all these objects, but only part of them (DID of -52% in the total number of breeding sites and DID of 1% in the number of households with breeding sites). We found a significant reduction in the total number of large breeding sites but did not observe differences in the total number of households with breeding sites. Subjective factors, such as the belief that disused objects could become useful in the future, were largely responsible for the reduction in the number of large breeding sites. Conclusions: The municipal management approach to bulky waste can contribute to dengue prevention because it does not constitute rapidly generated waste in households, and its disposal can have a relatively long-lasting impact. The subjective factors related to the presence of these breeding sites in households warrant further study.

Resumen: Introducción: La enfermedad del Chikungunya es una arbovirosis, producida por el virus Alfavirus de la familia Togaviridae, transmitida por la picadura de mosquitos Aedes aegypti o Aedes albopictus. Objetivo: Determinar las características clínicas y la calidad de vida posterior a la infección por el virus de Chikungunya (CHIKV). Materiales y Métodos: estudio observacional, descriptivo, de corte transversal, de pacientes con CHIKV durante el mes de agosto de 2023. Se realizó un cuestionario, se midieron datos sociodemográficos, al diagnóstico de infección por CHIKV, duración de la enfermedad y manifestaciones clínicas. Se incluyó la versión española del “Cuestionario de calidad de vida SF-36”. Resultados: Participaron 192 personas que tuvieron chikungunya. La edad promedio de la población de estudio fue 36 +/- 13,62 años. El 53,65% fue del sexo femenino. Con respecto al estado de salud, tenían un peor estado de salud las mujeres (M: 68.93% vs H: 55,06%), empeorando con el aumento de la edad. Los síntomas más frecuentes fueron la fiebre y las poliartralgias. Conclusión: Todos los individuos presentan algún tipo de afectación en la calidad de vida, siendo más notorio en los dominios de rol físico, vitalidad y dolor.

Abstract: Introduction: Chikungunya disease is an arboviroais, caused by an Alfavirus virus of the Togaviridae family, transmitted by Aedes aegypti or Aedes albopictus mosquitoes. Objective: To determine the clinical characteristics and quality of life after Chikungunya virus (CHIKV) infection. Materials and Methods: observational, descriptive, cross-sectional study of patients with CHIKV during the month of August 2023. A questionnaire was carried out, sociodemographic data, diagnosis of CHIKV infection, duration of the disease and clinical manifestations were measured. The Spanish version of the “SF-36 Quality of Life Questionnaire” was included. Results: A group of 192 patients was evaluated during the study period. The average age of the study population was 36 +/- 13.62 years and 53.65% were female. Women reported worse health status (M: 68.93% vs. M: 55.06%) in general, and this increased with age. The most frequent symptoms were fever and polyarthralgia. Conclusion: All individuals reported some type of impairment in quality of life, particularly in the domains of physical role, vitality and pain.

Abstract Objectives : To monitor the oviposition activity of the mosquito Aedes aegypti and of dengue and chikungunya cases in four localities of temperate Argentina, during the 2023 epidemic. Methods : During the summer and autumn of 2023, the oviposition activity of the mosquito vector was monitored weekly using ovitraps, and the arrival of cases with dengue or chikungunya in Tandil, Olavarría, Bahía Blanca and Laprida were registered. Results : Monthly variations of the percentage of positive traps were similar in the first three locations; in Laprida the mosquito was not detected. On the con trary, a significant difference was observed in the per centage of total traps that ever tested positive in each locality, being higher in Olavarría (83.3%) than in Bahía Blanca (68.6%) and Tandil (48.7%). Regarding diseases, 18 imported cases of dengue and 3 of chikungunya were registered. In addition, the first autochthonous case of dengue in the region was recorded, being the southern most until known. Conclusion : It is essential to raise awareness and train the members of the health systems of the new regions exposed to Ae. aegypti for early detection of cases, and to the general population to enhance pre vention actions.

Resumen Objetivos : Monitorear la actividad de oviposición del mosquito Aedes aegypti y de casos de dengue y chikun gunya en cuatro localidades de Argentina templada, durante la epidemia del 2023. Métodos : Durante el verano y otoño del 2023, se mo nitoreó semanalmente mediante ovitrampas la actividad de oviposición del mosquito vector, y se registró el arribo de casos con dengue o chikungunya a Tandil, Olavarría, Bahía Blanca y Laprida. Resultados : La variación mensual del porcentaje de trampas positivas fue similar en las tres primeras localidades; en Laprida no se detectó el mosquito. Por el contrario, se observó una diferencia significativa del porcentaje de trampas que alguna vez resultó positiva en cada localidad, siendo mayor en Olavarría (83%), que en Bahía Blanca (67%) y Tandil (49%). Respecto a las enfermedades, se registraron 18 casos importados de dengue y 3 de chikungunya. Además, se registró el primer caso autóctono de dengue en la región, siendo el más austral hasta el momento. Conclusión : Es imprescindible sensibilizar y capacitar a los integrantes de los sistemas de salud de las nue vas regiones expuestas al Ae. aegypti para la detección temprana de casos, y a la población en general para potenciar las acciones de prevención.

RESUMEN Introducción: la leishmaniasis representa un grave problema de salud pública en diversas regiones de América Latina. Su impacto, magnitud y brotes epidémicos son consecuencia de políticas gubernamentales ineficientes. Objetivo: caracterizar una serie de casos de leishmaniasis cutánea. Métodos: se realizó una investigación descriptiva, de corte transversal, en la Universidad Nacional de San Cristóbal de Huamanga, Ayacucho, Perú, durante el período julio-septiembre de 2023. De un universo de estudio de siete pacientes, se trabajó con una muestra de igual denominación, obtenida mediante un muestreo intencional. El procesamiento de los datos se realizó con el Paquete Estadístico para las Ciencias Sociales (SPSS), versión 25,0, obteniéndose valores absolutos y porcentajes como medidas de resumen. Los resultados se presentaron en forma de textos, tablas y figuras. Resultados: los casos procedieron de cinco pueblos del distrito Ayna, provincia La Mar, departamento Ayacucho, Perú. El 71,4 % iniciaron los síntomas en el mes de marzo, en tanto cinco de los siete casos eran del sexo femenino y predominaron las lesiones en las extremidades inferiores (57,1 %). En las imágenes mostradas se observa la úlcera típica de fondo limpio, color rosado y tejido granuloso, redondeada, de bordes regulares y elevados. Conforme a los valores de laboratorio, la media para las cifras de hemoglobina resultó de 13,6 mg/dl. Conclusiones: los casos se caracterizaron por no presentar nexo epidemiológico y su presentación ocurrió en una época propicia para la proliferación de mosquitos. Las lesiones típicas permitieron el diagnóstico precoz y tratamiento oportuno.

ABSTRACT Introduction: leishmaniasis represents a serious public health problem in various regions of Latin America. Its impact, magnitude and epidemic outbreaks are a consequence of inefficient government policies. Objective: characterize a series of cases of cutaneous leishmaniasis. Methods: a descriptive, cross-sectional investigation was carried out at the National University of San Cristobal de Huamanga, Ayacucho, Peru, during the period July-September 2023. From a study universe of seven patients, we worked with a sample of the same name, obtained through intentional sampling. Data processing was carried out with the Statistical Package for the Social Sciences (SPSS), version 25.0, obtaining absolute values and percentages as summary measures. The results were presented in the form of texts, tables and figures. Results: the cases came from five towns in the Ayna district, La Mar province, Ayacucho department, Peru. Symptoms began in 71,4 % in the month of March, while five of the seven cases were female and lesions in the lower extremities predominated (57,1 %). In the images shown, the typical ulcer with a clean bottom, pink color and granular tissue, rounded, with regular and raised edges is observed. According to the values of the laboratory tests, the average hemoglobin levels were 13,6 % mg/dl. Conclusions: the cases were characterized by not presenting epidemiological links and its presentation occurred at a time conducive to the proliferation of mosquitoes. Typical lesions allowed early diagnosis and timely treatment.

Abstract Within households, bulky solid waste serves as the predominant breeding ground for mosquitoes that transmit dengue fever. The aim of this study is to identify and describe the relationship between material and subjective factors, using socioecological theoretical frameworks for health prevention. A descriptive cross-sectional study is conducted, using a simple random sample of 350 households in Asunción, Paraguay. To compare households based on the presence or absence of large breeding sites, the chi-square test, non-parametric Mann-Whitney-Wilcoxon statistical test, and Yuen's robust T statistical test is employed. Additionally, a multivariate logistic regression analysis was carried out to determinate the Odd Ratio (OR). The study concludes that individualistic approaches in dengue prevention must be transcended and management capacities in homes must be increased by addressing environmental barriers and social beliefs, given the factor that most significantly explaines the presence of obsolete objects in homes is the belief that these items could prove useful in the future. In the multivariate analysis, the perception of usefulness of the potential breeding sites was one of the two significant variables that explain this behavior. The other significant variable was the low coverage of waste collection.

Resumen Dentro de los hogares, los residuos sólidos voluminosos constituyen el tipo de criadero más frecuente del mosquito transmisor del dengue. El objetivo de este estudio es identificar y describir la relación entre factores materiales y subjetivos, a través de un marco teórico socioecológico de prevención de la salud. Se realiza un estudio transversal descriptivo, mediante una muestra aleatoria simple de 350 hogares en Asunción, Paraguay. Para comparar los hogares, según la presencia o no de criaderos de gran tamaño, se usa la prueba de chi cuadrado, en el caso de variables categóricas, el test estadístico no paramétrico Mann-Whitney-Wilcoxon, el test estadístico robusto T de Yuen y un análisis multivariado de regresión logística, para el cálculo del Odd Ratio (OR). El estudio concluye que se deben trascender los enfoques individualistas en la prevención del dengue y aumentar las capacidades de gestión en los hogares. Abordalas barreras del entorno y las creencias sociales, dado que el factor que explica con mayor fuerza estadística la existencia de objetos en desuso dentro de los hogares es la creencia de considerarlos de utilidad en el futuro. En el análisis multivariado, la percepción de utilidad del potencial criadero fue la variable que más explicaba la conducta. La otra variable significativa fue la baja cobertura de recolección de residuos.

Abstract To determine the species composition, relative abundance and seasonal variation of different mosquitoes Genera (Aedes, Anopheles, Armigeres, Culex, and Culiseta) in different habitats the present research work was carried out in Entomology Research Laboratory of The University of Peshawar. Sampling performed from variety of permanent and temporary breeding habitats was carried out on monthly basis from targeted breeding sites for two consecutive years through dipping method. Species diversity in the survey sites was noted. Collection from these seventeen various types of potential larval habitats, yielded a total of 42,430 immature constituting 41,556 larvae and 874 pupae. Among these only 19,651 adult mosquitoes emerged comprising 11,512 female and 8,139 male mosquitoes. 78% (n= 15333) of mosquito larvae were from permanent and 22% (n=4318) were from temporary breeding sites. This study showed that Peshawar valley harbours 15 species from the genera Aedes, Anopheles, Armigeres, Culex and Culiseta. When the density of each species was examined, Culex quinquifasciatus was found to be dominant (79%) and constant in distribution. Among the temporary habitats Aedes albopictus was found as the most prevalent species particularly from tree holes and water cisterns. The highest intensity of mosquitoes was in June (2243 emerged adults) and November (2667 emerged adults) while the lowest was in January (203 emerged adults). A perfect positive correlation (r = +0.8) was found between temperature and population of mosquitoes (df 10 and α 0.05). The species diversity index for mosquitoes remained between 0.12 and 1.76. The Margalef’s richness components was noticeably low for bamboo traps (0.2) and fairly high for rice fields, Percolating water and Animal tracks (1.3) which shows the abundance of mosquito species in these habitats. Similarly Pielou’s Evenness was highest for bamboo traps (E=1) showing species uniform distribution. Animal tracks were presumed not only the diverse habitat rather also possessed high value for species richness and species evenness. Temperature, rainfall, humidity and other related attributes responsible for species variation and abundance need to be analysed further to pave way for controlling vector species in their oviposition targeted sites. composition (Aedes Anopheles Armigeres Culiseta method noted 42430 42 430 42,43 41556 41 556 41,55 87 pupae 19651 19 651 19,65 11512 11 512 11,51 8139 8 139 8,13 78 n= n (n 15333 22 n=4318 n4318 4318 (n=4318 1 examined 79% 79 (79% distribution cisterns 2243 (224 adults 2667 (266 203 (20 adults. . r +0.8 08 0 df 0.05. 005 0.05 05 0.05) 012 12 0.1 176 76 1.76 Margalefs Margalef s 0.2 02 2 (0.2 fields 1.3 13 3 (1.3 Pielous Pielou E=1 E1 E (E=1 evenness Temperature rainfall 4243 4 43 42,4 4155 55 41,5 1965 65 19,6 1151 51 11,5 813 8,1 7 1533 n=431 n431 431 (n=431 (79 224 (22 266 (26 20 (2 +0. 00 0.0 01 0. 17 1.7 (0. 1. (1. E= (E= 424 42, 415 5 41, 196 6 19, 115 11, 81 8, 153 n=43 n43 (n=43 (7 26 ( +0 (0 (1 (E n=4 n4 (n=4 +

Resumo Para determinar a composição de espécies, abundância relativa e variação sazonal de diferentes gêneros de mosquitos (Aedes, Anopheles, Armigeres, Culex e Culiseta) em diferentes habitats, o presente trabalho foi realizado no Laboratório de Pesquisa em Entomologia da Universidade de Peshawar. A amostragem coletada a partir de uma variedade de habitats de reprodução permanentes e temporários foi realizada mensalmente a partir de locais de reprodução alvo por 2 anos consecutivos através do método de imersão. A diversidade de espécies nos locais de pesquisa foi anotada. A coleta desses 17 tipos diferentes de habitats larvais potenciais rendeu um total de 42.430 imaturos, constituindo 41.556 larvas e 874 pupas. Destes, emergiram apenas 19.651 mosquitos adultos, sendo 11.512 fêmeas e 8.139 machos. 78% (n = 15333) das larvas do mosquito eram de criadouros permanentes e 22% (n = 4318) de criadouros temporários. Este estudo mostrou que o vale de Peshawar abriga 15 espécies dos gêneros Aedes, Anopheles, Armigeres, Culex e Culiseta. Quando a densidade de cada espécie foi examinada, Culex quinquifasciatus foi considerado dominante (79%) e constante na distribuição. Entre os habitats temporários, o Aedes albopictus foi encontrado como a espécie mais prevalente, principalmente em ocos de árvores e cisternas de água. A maior intensidade de mosquitos foi em junho (2.243 adultos emergidos) e novembro (2.667 adultos emergidos), enquanto a menor foi em janeiro (203 adultos emergidos). Uma correlação positiva perfeita (r = +0,8) foi encontrada entre temperatura e população de mosquitos (DF 10 e α 0,05). O índice de diversidade de espécies de mosquitos permaneceu entre 0,12 e 1,76. Os componentes de riqueza de Margalef foram visivelmente baixos para armadilhas de bambu (0,2) e razoavelmente altos para campos de arroz, água percolada e rastros de animais (1,3), o que mostra a abundância de espécies de mosquitos nesses habitats. Da mesma forma, a uniformidade de Pielou foi maior para armadilhas de bambu (E = 1), mostrando distribuição uniforme das espécies. As pegadas de animais foram presumidas não apenas como habitat diverso, mas também possuíam alto valor para riqueza e uniformidade de espécies. Temperatura, chuva, umidade e outros atributos relacionados responsáveis pela variação e abundância das espécies precisam ser analisados mais a fundo para abrir caminho para o controle de espécies de vetores em seus locais de oviposição alvo. (Aedes Anopheles Armigeres Culiseta imersão anotada 1 42430 42 430 42.43 imaturos 41556 41 556 41.55 87 pupas Destes 19651 19 651 19.65 11512 11 512 11.51 8139 8 139 8.13 machos 78 n 15333 22 4318 examinada 79% 79 (79% prevalente 2.243 2243 243 (2.24 emergidos 2.667 2667 667 (2.66 emergidos, , 203 (20 emergidos. . r +0,8 08 0 DF 0,05. 005 0,05 05 0,05) 012 12 0,1 176 76 1,76 0,2 02 (0,2 arroz 1,3, 13 1,3 3 (1,3) forma E 1, 1) diverso Temperatura chuva 4243 4 43 42.4 4155 55 41.5 1965 65 19.6 1151 51 11.5 813 8.1 7 1533 431 (79 2.24 224 24 (2.2 2.66 266 66 (2.6 20 (2 +0, 00 0,0 01 0, 1,7 (0, (1,3 424 42. 415 5 41. 196 6 19. 115 11. 81 8. 153 (7 2.2 (2. 2.6 26 ( +0 (0 (1, 2. + (1

Abstract Silver nanoparticles are opted to have various applications in different fields ranging from traditional medicines to culinary items. It is toxic and most effective against bacteria, fungi viruses, parasites, parasite carrying vectors such as mosquitoes and their larvae and other eukaryotic microorganisms at low concentration without any side effects and toxicity to humans. In view of these data, the present research has been investigated by synthesizing silver nanoparticles using 1mM silver nitrate and aqueous extract of Passiflora foetida. The variation of nanoparticles in size and shape concerning the concentration of extract prepared were analysed. The formation of silver nanoparticles was confirmed by colour changing from yellowish green to reddish-brown implicating the surface plasmon resonance. Further, it was concluded by obtaining an absorbance peak at 420 nm using UV-Visible spectrophotometer analysis. FTIR analysis was used to identify the capping ligands, which included alkanes, aromatic groups and nitro compounds. The average grain size of ~12 nm to 14 nm with crystalline phase was revealed by X-ray Diffraction studies. The SEM images depicted the surface morphology with agglomeration; TEM studies showed the shape of nanoparticles as spherical and hexagonal with sizes ranging from 40 nm to 100 nm and EDAX analysis confirmed the presence of elemental silver as the principal constituent. The characterized silver nanoparticles were then tested for synergistic antibacterial effects with tetracycline, and the results show that they are more active against E. coli and S. aureus, but moderately effective against B. cereus and K. pneumoniae . It also had a strong larval and pupal toxic effects on the dengue vector, Aedes aegypti with the highest mortality. As a result, silver nanoparticles could be a viable alternative for a variety of applications. items bacteria viruses parasites humans data mM foetida analysed reddishbrown reddish brown resonance Further 42 UVVisible UV Visible ligands alkanes compounds 12 ~1 1 Xray X ray agglomeration 4 10 constituent tetracycline E S aureus B K vector mortality result ~

Resumo Os nanopartículos de prata são optados por ter várias aplicações em diferentes áreas que variam de medicamentos tradicionais a itens culinários. É tóxico e mais eficaz contra bactérias, vírus de fungos, parasitas, parasitas que transportam vetores como mosquitos e suas larvas e outros microorganismos eucarióticos em baixa concentração, sem efeitos colaterais e toxicidade para os seres humanos. Em vista desses dados, a presente pesquisa foi investigada sintetizando nanopartículas de prata usando nitrato de prata de 1 mm e extrato aquoso de Passiflora foetida. Foi analisada a variação de nanopartículas em tamanho e forma relativa à concentração de extrato preparado. A formação de nanopartículas de prata foi confirmada pela mudança de cor de verde amarelado para marrom-avermelhado, implicando a ressonância plasmônica da superfície. Além disso, foi concluído pela obtenção de um pico de absorvância a 420 nm usando análise do espectrofotômetro visível por UV. A análise do FTIR foi usada para identificar os ligantes de captura, que incluíam alcanes, grupos aromáticos e compostos nitro. O tamanho médio dos grãos de ~ 12 nm a 14 nm com fase cristalina foi revelado por estudos de difração de raios-X. As imagens SEM retratavam a morfologia da superfície com aglomeração; Os estudos de TEM mostraram a forma das nanopartículas como esféricas e hexagonais, com tamanhos variando de 40 nm a 100 nm e a análise EDAX confirmou a presença de prata elementar como constituinte principal. As nanopartículas de prata caracterizadas foram então testadas quanto a efeitos antibacterianos sinérgicos com tetraciclina, e os resultados mostram que são mais ativos contra E. coli e S. aureus, mas moderadamente eficazes contra B. cereus e K. pneumoniae. Ele também teve um forte efeito tóxico larval e pupal no vetor de dengue, Aedes aegypti com a maior mortalidade. Como resultado, as nanopartículas de prata podem ser uma alternativa viável para uma variedade de aplicações. culinários bactérias fungos humanos dados foetida preparado marromavermelhado, marromavermelhado marrom avermelhado, avermelhado marrom-avermelhado disso 42 UV captura alcanes nitro raiosX. raiosX raios X. X raios-X aglomeração hexagonais 4 10 principal tetraciclina E S aureus B K pneumoniae dengue mortalidade resultado

ABSTRACT Background: Chikungunya fever is an emerging global infection transmitted by Aedes mosquitoes that manifests as an acute febrile illness with joint pain and can lead to chronic arthritis. The mechanism underlying chronic joint damage remains unclear; however, chronic chikungunya arthritis shares similarities with rheumatoid arthritis. Disease-modifying antirheumatic drugs have revolutionized rheumatoid arthritis treatment by preventing joint damage. However, the role of these therapies in chronic chikungunya arthritis has not been determined. We conducted a systematic review to evaluate the burden of joint structural damage in chronic chikungunya arthritis to help to define the role of disease-modifying therapy in this disease. Methods: This systematic review included retrospective and prospective studies, trials, and case reports evaluating joint damage caused by chikungunya virus. Various databases were searched without any date or language restrictions. Study selection was conducted independently by two researchers, and data were extracted from the articles selected. Results: A total of 108 studies were initially evaluated, with 8 meeting the inclusion criteria. Longitudinal studies have reported persistent joint pain from chikungunya infection and the progression of radiographic joint damage up to 13 years post-infection. Joint imaging revealed synovial inflammation, bone erosion, and cartilage destruction in patients with chronic chikungunya arthritis. Conclusions: Few studies have addressed chikungunya-induced joint damage, limiting our understanding of chronic chikungunya arthritis. Nevertheless, chronic chikungunya arthritis has similarities to rheumatoid arthritis. The success of early disease-modifying antirheumatic drug therapy in rheumatoid arthritis underscores the need for comprehensive research on its role in chikungunya arthritis. Background unclear however Diseasemodifying Disease modifying However determined diseasemodifying disease Methods trials virus restrictions researchers selected Results 10 evaluated criteria 1 postinfection. postinfection post infection. post-infection inflammation erosion Conclusions chikungunyainduced induced Nevertheless

Resumen Introducción : El dengue es una enfermedad trans mitida por mosquitos del género Aedes, que presenta un aumento histórico de casos en América del Sur, y representa un problema en salud pública. Desde la Unidad Febril de Urgencias (UFU) del Hospital Muñiz se analizaron los resultados de laboratorio y se identificó el serotipo circulante en la Ciudad Autónoma de Bue nos Aires (CABA), la proporción de casos autóctonos, registrando sintomatología y epidemiología. El objetivo de este análisis fue determinar el incremento de casos autóctonos de dengue en CABA. Métodos : Estudio observacional y retrospectivo, entre 1 de enero y 8 de mayo de 2023, de los casos con PCR positiva para dengue. Resultados : Se atendieron 1159 pacientes con sinto matología febril, de los cuales 554 (47.7%) fueron casos probables, mientras que los restantes 542 (46.7%) fueron síndromes febriles de otra etiología. De los casos pro bables se evaluaron 162 con PCR positiva (29%), de los que 18 (11%) fueron importados y 144 (89%) autóctonos. Predominó el DENV-2 (86% de los casos confirmados). Las manifestaciones clínicas fueron: fiebre (100%), mialgias (100%), cefalea (98%), artralgias (87%), náuseas (46%), dolor retroocular (39%). Discusión : En los últimos 10 años se registró un aumento en el número de casos de dengue autóctono en CABA. Al análisis de este artículo el dengue autóc tono se presenta como un brote a nivel de la ciudad. Es importante la notificación de la clínica y epidemiología para considerar estrategias en salud pública en la lucha contra el dengue y posibles nuevos estudios relacionados con brotes y epidemias.

Abstract Introduction : Dengue is a disease transmitted by mosquitoes of the Aedes genus; this has presented a historical increase in cases in South America, which represents a public health problem. From the Febrile Emergency Unit (UFU) of Hospital Muñiz, the laboratory results were analyzed and the circulating serotype was identified at the level of the Autonomous City of Buenos Aires (CABA), confirming the proportion of indigenous cases, recording symptoms and epidemiology. The ob jective of this analysis is to highlight the increase in indigenous cases of dengue in CABA. Methods : An observational and retrospective study was carried out, from January 1 to May 8, 2023, of the positive PCR results for dengue. Results : 1159 patients with febrile symptoms were assisted, of which 554 (47.7%) were probable cases while the remaining 542 (46.7%) were febrile syndromes of another etiology. Of the probable cases, 162 with positive PCR results (29%) were evaluated, of which 18 (11%) were imported and 144 (89%) native. DENV-2 predominated (86% of confirmed cases). The clinical manifestations were fever (100%), my algia (100%), headache (98%), arthralgia (87%), nausea (46%), and retroocular pain (39%). Discussion : For 10 years, there has been an increase in the number of indigenous dengue cases in CABA. In the analysis of this article, autochthonous dengue ap pears as an outbreak at the city level. Notification of the clinic and epidemiology is important to consider public health strategies in the fight against dengue and pos sible new studies related to outbreaks and epidemics.

ABSTRACT Mansonia Blanchard mosquitoes are aggressive and opportunistic, making it difficult for habitation in certain areas. However, there is no data regarding their rearing in laboratory in Brazil. Therefore, the aim of this study was to evaluate the effect of different diet composition on the development of Mansonia humeralis immatures. The plant Pistia stratiotes was used as a substrate for larval attachment, and fish food (Tetra Marine® Flakes) and baker's yeast (Saccharomyces cerevisiae) in various combinations were used as feed. Eggs and larvae were obtained from mosquitoes collected in the field using protected human catches, and the experiments were conducted in the laboratory (25-27°C and 70-80% relative humidity) with 200 larvae per container (n=15). Mortality rate, larval development time, pupation rate, emergence rate, and the number of eggs and larvae were recorded. Overall, a high mortality rate (0.5 – 0.7) was observed in the first 12 days of the experiment in all diets, up to 50% of adults emerged from the remaining larvae with a male to female ratio of 1.1 to 1.3. The use of yeast in combination with fish food resulted in lower mortality rate (0.52), a shorter larval development time (34 days), a higher pupation rate (0.21) and number of eggs (21 eggs) compared to the other diets. However, fertility was very low (1%) regardless of the diet used. The use of yeast is recommended as part of the diet offered to this mosquito species under the laboratory conditions used in our study. opportunistic areas However Brazil Therefore immatures attachment Tetra Marine Flakes bakers baker s Saccharomyces cerevisiae feed catches 2527°C 2527C C 25 27°C 27 7080% 7080 70 80% 80 70-80 humidity 20 n=15. n15 n n=15 . 15 (n=15) recorded Overall 0.5 05 0 5 (0. 0.7 07 7 1 diets 50 11 1. 13 3 1.3 0.52, 052 0.52 , 52 (0.52) 34 (3 days, days) 0.21 021 21 (0.21 (2 1% (1% 2527 2 27C 708 8 70-8 n1 n=1 (n=15 0. (0 (0.52 ( 0.2 02 (0.2 (1 252 70- n= (n=1 (n= (n

Abstract Background: Arboviral diseases are a group of infectious diseases caused by viruses transmitted by arthropods, mainly mosquitoes. These diseases, such as those caused by the dengue (DENV), Zika (ZIKV), chikungunya (CHIKV), and yellow fever (YFV) viruses, have a significant impact worldwide. In this context, entomological surveillance plays a crucial role in the control and prevention of arboviruses by providing essential information on the presence, distribution, and activity of vector mosquitoes. Based on entomological surveillance, transovarian transmission provides information regarding the maintenance and dissemination of arboviruses. The objective of this study was to detect these arboviruses in Goiânia, Goiás, and analyze the occurrence of transovarian transmission. Methods: Aedes aegypti eggs were collected from different regions of Goiânia and cultivated under controlled laboratory conditions until the emergence of adult mosquitoes. Adult females were grouped into pools containing their heads and thoraxes. These pools were subsequently evaluated using reverse-transcription quantitative polymerase chain reaction (RT-qPCR) assay. Results: A total of 157 pools (N=1570) were analyzed, with two pools testing positive for CHIKV and one pool testing positive for ZIKV, indicating that the offspring resulting from transovarian transmission are potentially infectious. Conclusions: In summary, the demonstration of the vertical transmission mechanisms of CHIKV and ZIKV in A. aegypti serves as an alert to health authorities, as these diseases are still underreported, and their primary urban vector has likely acquired this capacity, contributing to the dissemination of these infections. Background arthropods mosquitoes DENV, DENV , (DENV) (ZIKV) CHIKV, (CHIKV) YFV (YFV worldwide context presence distribution Goiás Methods thoraxes reversetranscription reverse transcription RTqPCR RT qPCR (RT-qPCR assay Results 15 N=1570 N1570 N 1570 (N=1570 analyzed Conclusions summary authorities underreported capacity infections (DENV (ZIKV (CHIKV 1 N=157 N157 (N=157 N=15 N15 (N=15 N=1 N1 (N=1 N= (N= (N