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1.
Einstein (Säo Paulo) ; 21: eAE0115, 2023. graf
Article in English | LILACS-Express | LILACS | ID: biblio-1448183

ABSTRACT

ABSTRACT This study proposes a strategy for large-scale testing among a large number of people for the early diagnosis of COVID-19 to elucidate the epidemiological situation. Pool testing involves the analysis of pooled samples. This study aimed to discuss a reverse transcription technique followed by quantitative real-time polymerase chain reaction using pool testing to detect SARS-CoV-2 in nasopharyngeal swab samples. The study proposes an innovative diagnostic strategy that contributes to resource optimization, cost reduction, and improved agility of feedback from results.

2.
Epidemiol. serv. saúde ; 31(1): e2021409, 2022. tab, graf
Article in English, Portuguese | LILACS | ID: biblio-1375391

ABSTRACT

Objetivo: Demonstrar a viabilidade da utilização combinada da autocoleta de swab nasofaríngeo e pool testing para detecção do SARS-CoV-2 em inquéritos epidemiológicos. Métodos: A experiência envolveu amostra de 154 estudantes da Universidade Federal de Minas Gerais, que realizaram a autocoleta do swab nasofaríngeo em cabines individuais e sem supervisão. O teste molecular foi realizado utilizando-se a técnica de pool testing. Resultados: A obtenção de amostras durou cerca de 5 minutos por pessoa. Realizou-se análise para detecção de RNA endógeno em 40 amostras e os resultados indicaram que não houve falhas decorrentes da autocoleta. Nenhum dos pools detectou presença de RNA viral. O custo da realização do teste molecular (RT-PCR) por pool testing com amostras obtidas por autocoleta foi cerca de dez vezes menor do que nos métodos habituais. Conclusão: As estratégias investigadas mostraram-se economicamente viáveis e válidas para a pesquisa de SARS-CoV-2 em inquéritos epidemiológicos.


Objetivo: Demostrar la viabilidad del uso combinado de la auto recolección de swabs nasofaríngeos y tests por agrupamiento (pool testing) para la detección del SARS-CoV-2 en encuestas epidemiológicas. Métodos: La prueba involucró a una muestra de 154 estudiantes de la Universidade Federal de Minas Gerais, quienes realizaron e autorecolectado del hisopo nasofaríngeo en cabinas individuales sin supervisión. La prueba molecular se realizó utilizando la técnica de prueba de grupo. Resultados: La obtención de muestras duró unos 5 minutos por persona. Se realizó un análisis para detectar ARN endógeno en 40 muestras y los resultados indicaron que no hubo fallas derivadas de la autorecolección. Ninguno de los grupos detectó la presencia de ARN viral. El costo de realizar una prueba molecular (RT-PCR) por pool con muestras obtenidas por auto-recolección fue aproximadamente 10 veces menor que con los métodos habituales. Conclusión: Las estrategias investigadas demostraron ser económicamente viables y válidas para la investigación del SARS-CoV-2 en encuestas epidemiológicas.


Objective: To show the feasibility of the combined use of self-collected nasopharyngeal swab and pool testing to detect SARS-CoV-2 in epidemiological surveys. Methods: This experience included a sample of 154 students at the Universidade Federal de Minas Gerais, who performed self-collected nasopharyngeal swab in individual cabins and without supervision. The molecular test was performed using the pool testing technique. Results: It took each person 5 minutes to collect the sample. An analysis was performed to detect endogenous RNA in 40 samples. The results showed that there were no failures resulting from self-collection. None of the pools detected the presence of viral RNA. The cost of molecular testing (RT-PCR), by pool testing, with samples obtained by self-collection was about ten times lower than the usual methods. Conclusion: The strategies that were investigated proved to be economically feasible and valid for the research on SARS-CoV-2 in epidemiological surveys.


Subject(s)
Humans , Feasibility Studies , Self-Testing , COVID-19/diagnosis , Students, Medical/statistics & numerical data , Brazil/epidemiology , Nasopharynx/virology , SARS-CoV-2/pathogenicity
3.
Rev. Soc. Bras. Med. Trop ; 54: e02762021, 2021. tab, graf
Article in English | LILACS | ID: biblio-1347094

ABSTRACT

Abstract INTRODUCTION: The pool testing technique optimizes the number of tests performed and reduces the delivery time of results, which is an interesting strategy for the health crisis caused by the COVID-19 pandemic. This integrative review investigated studies in which pool testing was carried out for epidemiological or screening purposes to analyze its clinical or cost effectiveness and assessed the applicability of this method in high-, middle-, and low-income countries. METHODS: This integrative review used primary studies published in the MEDLINE, EMBASE, Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILACS), and Cochrane Library databases. RESULTS: A total of 435 studies were identified: 35.3% were carried out in Asia, 29.4% in Europe, 29.4% in North America, and 5.9% in Oceania. CONCLUSIONS: This review suggests that pool testing in the general population may be a useful surveillance strategy to detect new variants of SARS-CoV-2 and to evaluate the period of immunogenicity and global immunity from vaccines.


Subject(s)
Humans , SARS-CoV-2 , COVID-19 , Mass Screening , Pandemics , COVID-19 Testing
4.
Rev. bras. queimaduras ; 19(1): 17-23, 2020.
Article in Portuguese | LILACS | ID: biblio-1359394

ABSTRACT

OBJETIVO: Avaliar a compreensão dos acadêmicos de medicina sobre o atendimento inicial a pacientes queimados, bem como o aprendizado sobre a temática ao longo do curso. MÉTODO: Trata-se de um estudo transversal descritivo realizado em uma instituição de ensino superior de Minas Gerais, por meio da aplicação de um questionário validado por Balan e colaboradores. A coleta de dados ocorreu entre março e outubro de 2020, com 92 acadêmicos do 1° ano e 45 acadêmicos do 6° ano de medicina. As análises foram realizadas no software R versão 4.0.3. Descritas por frequências absolutas e relativas, desvio-padrão, teste Exato de Fisher, teste Qui-quadrado e teste de Mann-Whitney. RESULTADOS: Constatou-se que 6,67% dos acadêmicos do 6° ano acertaram acima de 80% das questões e 2,17% do 1° ano. A média de acertos, em porcentagem, no 6° ano foi 63,1±10,3 versus 47,0±16,9 no 1° ano. O tema de maior desconhecimento foi reanimação volêmica, cujo, 93,3% acadêmicos do 6° ano contra 96,7% no 1° ano erraram. O exame básico, cuidados iniciais, cálculo da superfície corporal queimada e triagem foram áreas do conhecimento com maior percentual de acerto no 6° ano: 93,3%, 85,6±25,3%, 80% e 85,2±19,5%, respectivamente, enquanto os do 1° ano tiveram menos acertos. CONCLUSÃO: Verificou-se, pelo presente trabalho, que apesar do aumento de acertos em comparação com o 1° ano, algumas condutas médicas iniciais necessárias aos pacientes queimados como reposição volêmica, cuidados locais e antibioticoterapia não são compreendidas pelos acadêmicos do 6° ano, na maior parte da amostra estudada.


OBJECTIVE: To evaluate the understanding of medical students about the initial care for burn patients, as well as learning about the theme throughout the course. METHOD: This is a cross-sectional descriptive study carried out in a higher education institution in Minas Gerais, through the application of a questionnaire validated by Balan and collaborators. Data collection took place between March and October 2020, with 92 students from the 1st year and 45 students from the 6th year of medicine. The variables were presented by absolute and relative frequencies and standard deviation. RESULTS: It was found that 6.67% of the 6th grade students answered correctly above 80% of the questions and 2.17% of the 1st year. The average number of correct answers in the 6th year was 63.1±10.3 versus 47.0±16.9 in the 1st year. The theme of greatest ignorance was volemic resuscitation, whose 93.3% 6th graders against 96.7% in 1st grade missed. The basic exam, initial care, calculation of the burned body surface and screening were fields of knowledge with the greatest percentage of correct answers in the 6th year: 93.3%, 85.6±25.3%, 80%, and 85.2±19.5%, respectively, while those in the 1st year had less correct answers. CONCLUSION: It was found, in the study, that despite the increase in correct answers compared to the 1st year, some initial medical procedures necessary for burned patients, such as: volume replacement, local care and antibiotic therapy, are not understood by 6th graders, in most of the studied sample.


Subject(s)
Humans , Students, Medical , Burns , Education, Medical/methods , First Aid/instrumentation , Epidemiology, Descriptive , Cross-Sectional Studies/instrumentation
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