ABSTRACT Objectives: To determine the frequency of depression and anxiety among Latin American medical students during social distancing in the COVID-19 outbreak period. Methods: Observational, descriptive and cross-sectional design, the study included all Latin American medical students affiliated to the Federación Latinoamericana de Sociedades Científicas de Estudiantes de Medicina (FELSOCEM) selected through non-probabilistic convenience sampling who agreed to participate in the study. Data was collected through a questionnaire, consisting primarily of socio-demographic characteristics such as age, gender, marital status, and country of origin; as a second section, the Goldberg depression and anxiety test was applied, and an analysis was carried out by the nature of the variables. The research protocol was approved by an institutional ethics committee. Results: Of 1579 participating students, from 15 Latin American countries, 68.59% (1083) were women, 65.04% (1027) were between 20 and 24 years old, 95.63% (1510) were single, 23.18% (366) lived in Panama and 11.08% (175) in Chile. 87.14% (1376) have symptoms of anxiety, 66.88% (1056) have symptoms of depression and 64.34% (1016) have both symptoms. Conclusions: A high percentage of medical students in Latin American population suffered symptoms of anxiety and depression during the social distancing measures in the covid-19 outbreak period, data that must be taken into account for future mental health strategies.

RESUMEN Objetivos: Determinar la frecuencia de depresión y ansiedad en estudiantes de la carrera de medicina de Latinoamérica durante el distanciamiento social en el período de brote del COVID-19. Métodos: Diseño observacional, descriptivo y corte transversal, se incluyó en el estudio todos los estudiantes de medicina de Latinoamérica que se encuentren afiliados a la Federación Latinoamericana de Sociedades Científicas de Estudiantes de Medicina (FELSOCEM) seleccionados a través del muestreo no probabilístico por conveniencia que accedieron participar del estudio. Mediante un cuestionario se recopilaron datos, compuesto primeramente por características sociodemográficas como edad, género, estado civil y país de procedencia; como segunda sección, el instrumento estuvo compuesto por el test de depresión y ansiedad de Goldberg, se realizó un análisis en concordancia con la naturaleza de las variables. El protocolo de investigación fue aprobado por un comité de ética institucional. Resultados: De 1579 estudiantes participantes, de 15 países latinoamericanos, 68.59% (1083) fueron mujeres, 65.04% (1027) tenían entre 20 y 24 años, 95.63% (1510) eran solteros, 23.18% (366) vivían en Panamá y 11.08% (175) en Chile. El 87.14% (1,376) tienen síntomas de ansiedad, el 66.88% (1,056) tienen síntomas de depresión y el 64.34% (1,016) tienen ambos síntomas. Conclusiones: Un alto porcentaje de la población médico-estudiantil latinoamericana padecieron de síntomas de ansiedad y depresión durante las medidas de distanciamiento social en el periodo de brote del covid-19, dato que tiene que ser tomado en cuenta para futuras estrategias sobre salud mental.

ABSTRACT Introduction: Multidrug-resistant tuberculosis is a significant public health problem for which drugs are used with many adverse effects. Among the devastating consequences of these diseases, there is a wide variation in the incidence of ototoxicity and hearing loss in patients with multidrug-resistant and extremely resistant tuberculosis. Cochlear implants may be indicated in patients with unilateral/severe bilateral hearing loss with no benefit from conventional hearing aids, but their use in patients with tuberculosis is rare. Case report: We present the first case of a right unilateral cochlear implant performed on a 34-year-old Peruvian patient who presented profound sensorineural hearing loss of cochlear origin. Conclusion: Cochlear implant surgery is an essential milestone in the treatment of patients with auditory sequelae of tuberculosis treatment. Close monitoring of possible complications of tuberculosis treatment should be strengthened in countries with a high incidence of multidrug-resistant and extremely resistant tuberculosis.

RESUMEN Introducción: La tuberculosis multidrogorresistente es un importante problema de salud pública para el que se utilizan fármacos con múltiples efectos adversos. Entre las devastadoras consecuencias de estas enfermedades, existe una amplia variación en la incidencia de ototoxicidad y pérdida auditiva en pacientes con tuberculosis multirresistente y extremadamente resistente. Los implantes cocleares pueden estar indicados en pacientes con pérdida auditiva unilateral/bilateral severa sin beneficio de los audífonos convencionales, pero su uso en pacientes con tuberculosis es raro. Reporte de un caso: Presentamos el primer caso de implante coclear unilateral derecho realizado a un paciente peruano de 34 años que presentaba hipoacusia neurosensorial profunda de origen coclear. Conclusión: La cirugía de implante coclear es un hito fundamental en el tratamiento de los pacientes con secuelas auditivas del tratamiento de la tuberculosis. Se debe fortalecer la vigilancia estrecha de las posibles complicaciones del tratamiento de la tuberculosis en los países con una alta incidencia de tuberculosis multirresistente y extremadamente resistente.

Resumen Objetivo: Sintetizar las características epidemiológicas y clínicas de los niños de COVID-19 con EK, KLD y MIS-C. Métodos: Se realizó una búsqueda en 4 bases de datos y preprints hasta el 31 de Mayo del 2021. Se incluyeron reportes/series de caso que evaluaron las caracte rísticas clínicas del EK, KLD o MIS-C en pacientes pediátricos con COVID-19. Resultados: Se incluyeron 16 estudios (seis informes de casos y diez series de casos, 367 pacientes en total, 58 pacientes con EK, 87 con KLD y 290 pacientes con MIS-C); con edades entre los 6 meses y los 10 años, y el 62% eran mujeres. Se observó COVID-19 positivo en 75,2%. Respecto a EK, KLD y MIS-C, las características clínicas repor tadas fueron compatibles con los cuadros diagnósticos estandarizados en el contexto de COVID-19. La duración de la hospitalización fue de 5 a 14 días para EK y de 4,3 a 13 para MIS-C. Once pacientes con MIS-C (2,8%) necesitaron ECMO. Seis pacientes con MIS-C fueron reportados muertos. Ocho estudios reportaron pacientes en la UCI. Conclusiones: EK o KLD puede asociarse a COVID-19 en niños, y pueden complicarse con MIS-C. El tiempo de hospitalización es prolongado si se presenta EK o KLD asociado a COVID-19 en niños.

Abstract Objective: To synthesize the epidemiological and clinical characteristics of COVID-19 children with MIS-C, KLD and EK. Methods: Databases and preprints were searched until May 31, 2021. Reports/case series that evaluated the clinical features of EK, KLD, or MIS-C in pediatric patients with COVID-19 were included. Results: Sixteen studies were included (six case reports and ten case series, 367 patients total, 58 patients with EK, 87 with KLD, and 290 patients with MIS-C); with ages ranging from 6 months to 10 years, and 62% were female. Positive COVID-19 was observed in 75.2%. Regarding EK, KLD and MIS-C, the reported clinical characteristics were compatible with the standardized diagnostic pictures in the context of COVID-19. The duration of hospitalization was 5 to 14 days for EK and 4.3 to 13 for MIS-C. Eleven patients with MIS-C (2.8%) needed ECMO. Eleven patients with MIS-C (2.8%) needed ECMO. Six patients with MIS-C were reported dead. Eight studies reported patients in the ICU. Conclusions: Children with COVID-19 develop EK or KLD, and can be complicated by MIS-C. Prevention, diagnosis, and treatment measures are needed.

We aimed to estimate the prevalence and factors associated with parents’ non-intention to vaccinate their children and adolescents against COVID-19 in Colombia and Peru. We performed a secondary analysis using a database generated by the University of Maryland and Facebook (Facebook, Inc). We included adult (18 and over) Facebook users residing in LAC who responded to the survey between May 20, and November 5, 2021. We included sociodemographic characteristics, comorbidities, mental health, economic and food insecurity, compliance with mitigation strategies against COVID-19, and practices related to vaccination against this disease. We estimated crude (cPR) and adjusted (aPR) prevalence ratios with their respective 95%CI. We analyzed a sample of 44,678 adults from Colombia and 24,302 from Peru. The prevalence of parents' non-intention to vaccinate their children and adolescents against COVID-19 was 7.41% (n=3,274) for Colombia and 6.64% (n=1,464) for Peru. In Colombia, age above 35 years old, compliance with physical distancing, use of masks, having economic insecurity, anxiety symptoms, having a chronic condition or more comorbidities, and being vaccinated were associated with a lower prevalence of non-intention to vaccinate children and adolescents against COVID-19. In Peru, gender, compliance with physical distancing, use of masks, having economic insecurity, anxiety symptoms, having a chronic condition or more comorbidities, having had COVID-19, and being vaccinated were associated with a higher probability of vaccinating children against COVID-19. Living in a town, a village, or a rural area was associated with a higher prevalence of non-intention to vaccinate children and adolescents against COVID-19. About 9 out of 10 parents in Colombia and Peru intend to vaccinate their children and adolescents against COVID-19. This intention is associated with some factors which are similar between the two countries, as well as other factors and variations among the different regions of each country.

Objective: To determine the prevalence and factors associated with the intention to vaccinate (ITV) against COVID-19 in Peru. Material and methods: Analytical cross-sectional study using the survey conducted by the University of Maryland, USA, on Facebook. The dependent variables were ITV. Crude and adjusted prevalence ratios (PR) were calculated, with their 95% confidence intervals (95% CI) using generalized linear models of the Poisson family, to evaluate the association of sociodemographic variables, compliance with community mitigation strategies, symptoms of COVID-19, mental health and acceptance of vaccination before the recommendation (AVR) by various actors and health authorities, with the ITV. Results: Data from 17,162 adults were analyzed. The overall prevalence of ITV was 74.9%. A lower prevalence of IDV was associated with the female sex, living in a town or rural area and the AVR of politicians, PR=0.95 (95%CI:0.94-0.96), PR=0.95 (95%CI:0.91-0.99), PR=0.90 (95%CI:0.86-0.93) and PR=0.89 (95%CI:0.87-0.91); respectively. Conversely, having COVID-19 symptoms, economic insecurity, fear of a family member getting sick from COVID-19, depressive symptoms, and the AVR of family and friends, healthcare workers, world health organization and government officials partnered with higher prevalence of ITV, PR=1.05 (95%CI:1.03-1.08), PR=1.03 (95%CI:1.01-1.06), PR=1.48 (95%CI:1.35-1.63), PR = 1.03 (95%CI:1.01-1.06), PR=1.10 (95%CI: 1.08-1.12), PR = 1.29 (95%CI: 1.26-1.32), PR=1.34 (95%CI: 1.29-1.40) and PR=1.18 (95%CI: 1.15-1.21); respectively. Conclusion: Three-quarters of the respondents manifest ITV. There are potentially modifiable factors that could improve vaccine acceptance.

Objetivo: Determinar la prevalencia y factores asociados a la intención de vacunación (IDV) contra la COVID-19 en el Perú. Material y métodos: Estudio transversal analítico utilizando la encuesta realizada por Universidad de Maryland, EUA, en Facebook. Las variables dependientes fueron la IDV. Se calcularon razones de prevalencia (RP) crudas y ajustadas, con sus intervalos de confianza al 95% (IC95%), mediante modelos lineales generalizados de la familia Poisson, para evaluar la asociación de variables sociodemográficas, cumplimiento de estrategias comunitarias de mitigación, síntomas de COVID-19, salud mental y aceptación de la vacunación ante la recomendación (AVR) por diversos actores y autoridades sanitarias, con la IDV. Resultados: Se analizaron los datos de 17.162 adultos. La prevalencia general de IDV fue de 74,9%. Se asoció a menor prevalencia de IDV el sexo femenino, vivir en un pueblo o zona rural y la AVR de políticos, RP=0,95 (IC95%:0,94-0,96), RP=0,95 (IC95%:0,91-0,99), RP=0,90 (IC95%:0,86-0,93) y RP=0,89 (IC95%:0,87-0,91); respectivamente. Contrariamente, tener síntomas de COVID-19, inseguridad económica, miedo a que un familiar enferme de COVID-19, síntomas depresivos y la AVR de familiares y amigos, trabajadores de la salud, organización mundial de la salud y funcionarios del gobierno se asociaron con mayor prevalencia de IDV, RP=1,05 (IC95%:1,03-1,08), RP=1,03 (IC95%:1,01-1,06), RP=1,48 (IC95%:1,35-1,63), RP=1,03 (IC95%:1,01-1,06), RP=1,10 (IC95%:1,08-1,12), RP=1,29 (IC95%:1,26-1,32), RP=1,34 (IC95%:1,29-1,40) y RP=1,18 (IC95%:1,15-1,21); respectivamente. Conclusión: Tres cuartas partes de los encuestados manifiestan IDV. Existen factores potencialmente modificables que podrían mejorar la aceptación de la vacuna.

Objetivo: Determinar a prevalência e os fatores associados à intenção de vacinar (IDV) contra COVID-19 no Peru.Material e métodos: Estudo transversal analítico a partir de survey realizado pela University of Maryland, EUA, no Facebook. As variáveis ​​dependentes foram IDV. Foram calculadas razões de prevalência (RP) brutas e ajustadas, com seus intervalos de confiança de 95% (IC 95%), utilizando modelos lineares generalizados da família Poisson, para avaliar a associação de variáveis ​​sociodemográficas, adesão a estratégias de mitigação da comunidade, sintomas de COVID- 19, saúde mental e aceitação da vacinação antes da recomendação (AVR) por diversos atores e autoridades sanitárias, junto ao IDV.Resultados: Dados de 17.162 adultos foram analisados. A prevalência geral de IDV foi de 74,9%. A menor prevalência de IDV foi associada ao sexo feminino, residente em cidade ou zona rural e ao AVR de políticos, RP = 0,95 (IC95%: 0,94-0,96), RP = 0,95 (IC95%: 0,91-0,99) , RP = 0,90 (IC 95%: 0,86-0,93) e RP = 0,89 (IC 95%: 0,87-0,91); respectivamente. Por outro lado, ter sintomas de COVID-19, insegurança econômica, medo de um membro da família ficar doente por causa de COVID-19, sintomas depressivos e AVR de familiares e amigos, profissionais de saúde, organização mundial de saúde e funcionários do governo em parceria com maior prevalência de IDV, PR = 1,05 (IC 95%: 1,03-1,08), PR = 1,03 (IC 95%: 1,01-1,06), PR = 1,48 (IC 95%: 1,35-1,63), PR = 1,03 (IC 95%: 1,01-1,06 ), RP = 1,10 (IC 95%: 1,08-1,12), RP = 1,29 (IC 95%: 1,26-1,32), RP = 1,34 (IC 95%: 1,29-1,40) e RP = 1,18 (IC 95%: 1,15 -1,21); respectivamente.Conclusão: Três quartos dos entrevistados manifestam IDV. Existem fatores potencialmente modificáveis ​​que podem melhorar a aceitação da vacina.

RESUMEN Se describe la evidencia actual del efecto del SARS-CoV-2 a nivel de tejido renal. Se realizó una revisión narrativa de los artículos publicados en SCOPUS y PUBMED hasta septiembre de 2020. Los resultados se dividieron en las siguientes secciones: evidencia del efecto directo del virus en el riñón, mecanismos de invasión celular, mecanismos de injuria celular y las potenciales implicaciones terapéuticas de estos hallazgos. El SARS-CoV-2 invade las células del túbulo proximal y los podocitos, a través del receptor ECA-2. La invasión y replicación viral podrían producir daño mediante un efecto citopático directo aunado a un daño mediado por la respuesta inmune. Debido a la expresión celular de ECA-2, se ha propuesto a los Inhibidores del Sistema Renina- Angiotensina-Aldosterona como un potencial tratamiento contra la COVID-19. Sin embargo, a la fecha, la evidencia no apoya su uso.

ABSTRACT We describe evidence on SARS-CoV-2 effect on the kidney. We carried a narrative review of articles published in SCOPUS and PUBMED until September 2020. The results were divided into six topics: evidence of direct effect of virus on the kidney, mechanisms of cellular invasion, mechanisms of kidney injury, and potential therapeutic implications. SARS-Cov-2 gains access to proximal tubule cells and podocytes via ACE-2 receptors. Viral invasion and replication may induce kidney damage through a direct cytopathic effect and immune-mediated damage. Due to ACE-2 cellular expression, Renin-Angiotensin-Aldosterone System Inhibitors have been proposed as potential treatment for COVID-19. However, current evidence does not support its therapeutic use.

Resumen Se formulan recomendaciones de un grupo de consenso de expertos sobre los criterios para evaluar el desempeño diagnóstico (tamaño y selección de muestras para sensibilidad y especificidad analíticas, criterios para establecer límites de detección, criterios para establecer el estándar de oro para las serologías) que deberían ser tenidos en cuenta al evaluar y validar las pruebas diagnósticas para SARS CoV-2. Con el propósito de asegurar la calidad de las pruebas serológicas a utilizar en el país, se recomienda la participación en un programa de control de calidad externo, que garantice la idoneidad y desempeño en la realización de las pruebas diagnósticas serológicas y moleculares durante esta pandemia, ya que su uso tiene profundas implicaciones para las medidas de intervención clínicas individuales y de seguimiento y control en salud pública.

Abstract We formulate recommendations from a consensus working group on the criteria to evaluate the diagnostic performance (size and criteria of selection of samples to determine sensitivity, analytical specificity, criteria for limit of detection, criteria for gold standard to evaluate serological assays) that should be taken into account during the evaluation and validation/verification of diagnostic tests for SARS CoV-2 infection. A national external quality control program should be established to guarantee the suitability and performance of these diagnostic serological and molecular tests during this pandemic, that will have deep implications for decisions on clinical and public health.