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Highlights In one day, 4% (6 in 150) of hospital visitors had asymptomatic COVID-19. Potential of visitors’ viral shedding in healthcare facilities is underestimated. SARS-CoV-2 introduction into facilities is not fully blocked by universal masking.

Objetivo: O presente trabalho objetivou analisar a qualidade da areia de uma praia pública, no distrito de Outeiro, em Belém do Pará, quanto à presença de formas parasitológicas. Materiais e métodos: Foram coletadas amostras de areias em pontos específicos de zonas distintas provenientes da Praia do Amor, sendo analisadas individualmente pelas técnicas de Hoffman e de Rugai. Resultados: A realização dos métodos parasitológicos permitiu verificar a presença de parasitas. No método de Hoffman foram encontrados ovos de Enterobius sp. e larva de Strongyloides sp., enquanto pelo método de Rugai foi detectado cisto de Giardia sp. Conclusão: Este trabalho demonstra a presença de protozoários e helmintos em locais de lazer à população, indicando as espécies mais prevalentes em uma praia de Outeiro, o que ressalta a importância de análises parasitológicas para o desenvolvimento de estratégias em saúde pública para diminuição de parasitoses.

Background Health Care workers (HCW) are an important group affected by this pandemic and COVID-19 has presented substantial challenges for health professionals and health systems in many countries. The Brazilian vaccination plan implemented in October, so that third dose for HCW. However, the persistence of CoronaVac vaccine-induced immunity is unknown, and immunogenicity according to age cohorts may differ among individuals. Objective Evaluate the post vaccination immune humoral response and the relationship between post-vaccination seropositivity rates and demographic data among Healthcare Workers over 6 months after CoronaVac immunization. Methods A cross section study including Healthcare professionals vaccinated with CoronaVac for 6 months or more. The study was carried with the analysis of post-vaccination serological test to assess the levels of humoral response after vaccination. Results 329 participants were included. Among them, 76% were female. Overall, 18.5% were positive quantitative titles (IQR 42.87-125.5) and the negative group was 80%, quantitative titles (IQR 5.50-13.92). Conclusion It was possible to identify a group with positive quantitative titles in serological test for IgG antibody against the SARS-CoV-2. Further investigation is required to determine the durability of post-vaccination antibodies and how serological tests can be determine the ideal timing of vaccine booster doses.

In one week, 7,5% (9 in 120) asymptomatic inpatients were diagnosed with COVID-19 at a hospital with universal face masks policy. Median length of stay was 11 days, suggesting nosocomial infections. Most were presymptomatic with median cycle threshold value of 22, indicating high viral loads.

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First in Manaus in the Brazilian Northern region, the Variant of Concern P.1 traveled 3800 kilometers southeast to endanger Sao Paulo contributing to the collapse of the health system. Here, we show evidence of how fast the VOC P.1 has spread in the most populated city in South America.