Low frequency of SARS-CoV2 infection in daycare centers during the reopening of school activities in the Southeast's poor area of Brazil

Review Biochemistry & Molecular Biology

On the origin and evolution of SARS-CoV-2

Devika Singh et al.

Summary: The genome evolution of the coronavirus SARS-CoV-2 has played a crucial role in the development of COVID-19, with evidence of ancestral recombination events and natural selection. The spike protein of the virus shows significant signs of evolutionary processes, facilitating its spillover from other animals to humans. The global spread of SARS-CoV-2 has increased mutational variability in its genome, potentially leading to future recombination events.

EXPERIMENTAL AND MOLECULAR MEDICINE (2021)

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Article Public, Environmental & Occupational Health

Onset of effects of non-pharmaceutical interventions on COVID-19 infection rates in 176 countries

Ingo W. Nader et al.

Summary: The study found that closure and regulation of schools have the most immediate and pronounced effect, while restrictions on mass gatherings and businesses have a more gradual effect. Social distancing measures have a delayed effect starting about 18 days after implementation. This research can help guide policy decisions on implementing NPIs effectively.

BMC PUBLIC HEALTH (2021)

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Review Infectious Diseases

One year into the pandemic: Short-term evolution of SARS-CoV-2 and emergence of new lineages

Fernando Gonzalez-Candelas et al.

Summary: Three new viral variants associated with extensive transmission have been identified during the COVID-19 pandemic, originating from the UK, South Africa, and Brazil. These variants, designated as variants of concern (VOCs), exhibit a high number of amino acid substitutions, raising concerns about potential changes in the evolution of the virus. Strengthened genomic surveillance, especially following vaccination campaigns, is essential to monitor the spread and impact of these VOCs.

INFECTION GENETICS AND EVOLUTION (2021)

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News Item Multidisciplinary Sciences

DELTA CORONAVIRUS VARIANT: SCIENTISTS BRACE FOR IMPACT

Ewen Callaway

NATURE (2021)

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Review Virology

Immune Evasion of SARS-CoV-2 Emerging Variants: What Have We Learnt So Far?

Ivana Lazarevic et al.

Summary: Although SARS-CoV-2 evolves slowly compared to other RNA viruses, its rapid transmission during the COVID-19 pandemic has led to the emergence of numerous variants, some of which have been labeled as variants of concern. These variants may have an impact on transmission, morbidity/mortality, and evasion of neutralization by antibodies, especially monoclonal antibodies.

VIRUSES-BASEL (2021)

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Article Public, Environmental & Occupational Health