ABSTRACT Introduction: Immunogenicity has emerged as a challenge in the development of vaccines against coronavirus disease of 2019 (COVID-19). Immunogenicity is a determinant of the efficacy and safety of vaccines. This systematic review and associated meta-analysis summarized and characterized the immunogenicity of COVID-19 vaccines in randomized controlled trials (RCTs). Methods: Relevant RCTs were systematically sourced from different medical databases in August 2021. The risk ratios and mean differences with 95% confidence intervals were calculated. Results: Of 2,310 papers, 16 RCTs were eligible for review. These RCTs involved a total of 26,698 participants (15,292 males and 11,231 females). The pooled results showed a significant difference in the geometric mean titer between the vaccinated and control groups in favor of the vaccine group after 1 and 2 months of follow-up, for the young age group (18 - < 55y), and with different doses (P < 0.001). The difference in the older age group (>55y) was insignificant (P = 0.24). The seroconversion rate of spike neutralizing antibodies favored the vaccine groups 1 or 2 months after vaccination (P < 0.001). The seroconversion rate of the vaccine group was significantly different (P < 0.001) from that of the control group. Conclusions: Vaccination elicits immunogenicity in the follow-up period for all age groups and at low and large doses. Therefore, people should be encouraged to receive vaccines currently being offered. A boost dose has been asserted for the elderly.

Corynebacterium diphtheriae, the aetiologic agent of diphtheria, also represents a global medical challenge because of the existence of invasive strains as causative agents of systemic infections. Although tellurite (TeO32-) is toxic to most microorganisms, TeO32--resistant bacteria, including C. diphtheriae, exist in nature. The presence of TeO32--resistance (TeR) determinants in pathogenic bacteria might provide selective advantages in the natural environment. In the present study, we investigated the role of the putative TeR determinant (CDCE8392_813 gene) in the virulence attributes of diphtheria bacilli. The disruption of CDCE8392_0813 gene expression in the LDCIC-L1 mutant increased susceptibility to TeO32- and reactive oxygen species (hydrogen peroxide), but not to other antimicrobial agents. The LDCIC-L1 mutant also showed a decrease in both the lethality of Caenorhabditis elegans and the survival inside of human epithelial cells compared to wild-type strain. Conversely, the haemagglutinating activity and adherence to and formation of biofilms on different abiotic surfaces were not regulated through the CDCE8392_0813 gene. In conclusion, the CDCE8392_813 gene contributes to the TeR and pathogenic potential of C. diphtheriae.

JUSTIFICATIVA E OBJETIVOS: Os princípios da ética orientam a forma de ser e agir do profissional, particularmente no estabelecimento da relação médico-paciente, e por isso, demandam constante reflexão. Nesse sentido, o propósito deste estudo é analisar vivências éticas de anestesiologistas em sua interação com o paciente sob seus cuidados. MÉTODO: Estudo exploratório, que envolveu 16 médicos anestesiologistas com exercício profissional em um hospital universitário de João Pessoa, Paraíba. Os dados foram coletados por meio de entrevista semiestruturada e analisados qualitativamente com o uso da técnica de análise de conteúdo. RESULTADOS: Os achados do estudo evidenciam que as vivências éticas dos participantes do estudo na relação médico-paciente foram classificadas em cinco categorias temáticas: respeito ao paciente, tratamento humanizado, tratamento igualitário, sigilo profissional e respeito à autonomia do paciente. CONCLUSÕES: Conclui-se que os entrevistados reconhecem a ética e os valores humanísticos que devem pautar a relação com seus pacientes.

BACKGROUND AND OBJECTIVE: Ethical principles guide professional conduct, particularly in establishing the doctor-patient relationship and, therefore, require constant reflection. The purpose of this study is to analyze ethical experiences of anesthesiologists in their interaction with the patient under their care. METHOD: This was an exploratory study involving 16 active anesthesiologists at a university hospital in João Pessoa, Paraíba. We collected data through semi-structured interviews and analyzed qualitatively using the content analysis technique. RESULTS: The study findings show that the classification of ethical experiences of the study participants regarding the doctor-patient relationship were classified into five categories: respect for the patient, humane treatment, equal treatment, professional secrecy, and respect for patient autonomy. CONCLUSION: We conclude that respondents recognize the ethical and humanistic values that should guide the relationship with their patients.

JUSTIFICATIVA Y OBJETIVOS: Los principios de la ética guían la forma de ser y de actuar del profesional, particularmente en lo que se refiere al establecimiento de la relación médico-paciente y por eso, exigen una constante reflexión. En ese sentido, el propósito de este estudio, es analizar las vivencias éticas de los anestesiólogos en su interacción con el paciente que está bajo sus cuidados. MÉTODO: Estudio exploratorio, que tuvo la participación de 16 médicos anestesiólogos en el ejercicio de la profesión en un hospital universitario de João Pessoa, Paraíba. Los datos se recopilaron por medio de una entrevista semi-estructurada y fueron analizados cualitativamente con el uso de la técnica de análisis de contenido. RESULTADOS: Los hallazgos del estudio muestran que las vivencias éticas de los participantes en el estudio, en cuanto a la relación médico-paciente, se clasificaron en cinco categorías temáticas: respeto al paciente, tratamiento humanizado, tratamiento igualitario, secreto profesional y respeto a la autonomía del paciente. CONCLUSIONES: Concluimos que los entrevistados reconocen la ética y los valores humanísticos que deben guiar la relación con sus pacientes.

Este texto tem como objetivo oferecer um conjunto de problematizações acerca do "consumo consciente". Trata-se de um ensaio de natureza bibliográfica cuja tese central consiste em afirmar que, sob a prevalência do mundo mercantil, não se institui, de fato, o consumo consciente como afirmação do princípio da sustentabilidade socioambiental. Procura-se revelar o caráter ideológico desta formulação, que associa o consumismo e a possibilidade de sua superação apenas à necessidade de mudanças comportamentais sem que se explicitem suas dimensões socioeconômicas e sua funcionalidade como mecanismo de reprodução da lógica destrutiva do capital.

The purpose of this article is to raise a set of questions about "conscious consumption." It is an essay of a bibliographic nature whose central thesis consists in affirming that in a capitalist society conscious consumption cannot be instituted as an affirmation of the principle of socioenvironmental sustainability. The paper presents the ideological nature of this formulation, which associates consumerism and the possibility of overcoming it only to the need for behavioral changes, without explaining its socioeconomic dimensions and its functionality as a mechanism for the reproduction of the destructive logic of capital.

The objective of this study was to evaluate the effect of the replacement of a ground corn diet by a forage cactus meal diet on the carcass characteristics and body components of Santa Inês lambs finished in feedlot. This study was carried out at Estação Experimental de Pendência, belonging to Empresa de Pesquisa Agropecuária da Paraíba S.A. (EMEPA-PB). Forty Santa Inês male lambs in feedlot were used in the experiment. Treatments were randomly assigned to the animals according to a completely randomized design, with four treatments, which consisted of growing replacement levels of ground corn by forage cactus meal: 0, 33, 66 and 100% of substitution and ten replications (lambs). Animals were slaughtered, and the following characteristics were evaluated: body weight, empty body weight, hot carcass weight, cold carcass weight, non-carcass components (NCC), hot carcass yield, cold carcass yield, biological yield, revenue of non components of carcass, revenues of non-carcass components, relative weight and relative value of the commercial cuts, viscera and organs' yield. Averages were submitted to analysis of variance and regression analyses at a 5% level of probability. The replacement levels of ground corn by forage cactus meal had no influence on biological yield, revenue of the non components of carcass, relative weight and relative value of the prime and choice cuts or on the relative weight of viscera and organs. The replacement of ground corn by forage cactus meal, on the ration given to Santa Ines lambs in feedlot does not impact the biological yield, relative weight and relative value of prime and choice cuts or the relative weight of viscera and other organs.

The objective of this study was to evaluate the effect of the levels of replacement of ground corn by forage cactus meal in the diet on the muscularity and adiposity of carcass of Santa Inês lambs finished at feedlot. This study was carried out at Estação Experimental de Pendência, belonging to Empresa de Pesquisa Agropecuária da Paraíba S.A. (EMEPA-PB). Forty male Santa Inês lambs in feedlot were used in the experiment. Treatments were randomly assigned to the animals according to a completely randomized design, with four treatments, that consisted of growing substitution levels of ground corn for forage cactus meal: 0, 33, 66 and 100% of substitution and ten replications (lambs). Animals were slaughtered and carcasses cooled for 24 hours for later assessment of conformation, morphometry, loin eye-muscle area, fatness, perirenal fat, marbling and subcutaneous fat thickness. Legs were separated for dissection of muscle, bone, subcutaneous fat, intermuscle fat and total fat, which were weighed for the determination of the muscle:bone and muscle:fat relation and the relative weight of tissue components. Averages were submitted to variance and regression analyses at a 5% level of probability. Diets had no effect on carcass conformation. However, a negative linear effect on weights and yields of fats was observed with the increased levels of forage cactus meal in the diet, and the opposite was observed in the muscle yield behavior. Forage cactus meal is biologically as efficient as ground corn, because it increases the muscularity and reduces the adiposity of the carcass of Santa Inês lambs in feedlot.

Sera from humans and dogs were tested by microscopic agglutination test. Icterohaemorrhagiae was the predominant serogroup in both groups, associated with the infestation of Rattus norvegicus.

Se analizaron los sueros de humanos y de perros mediante la prueba de aglutinación microscópica. Icterohaemorrhagiae fue el serogrupo predominante en ambos, asociado con la infestación de Rattus norvegicus.