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March 14, 2026Advances in VirologyOpen Access

Genomic Surveillance of SARS‐CoV‐2 in Rio de Janeiro (2020–2021): Temporal Distribution of Viral Variants During the Early Pandemic Genomic Surveillance of SARS‐CoV‐2 in Brazil

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Authors

PFPriscila de Jesus FajardoBrazilian Institute of Neuropsychology and BehaviourLCLéo Freitas CorrêaUniversidade do Estado do Rio de JaneiroTVThays Cristine dos Santos VieiraBrazilian Institute of Neuropsychology and Behaviour

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Implication

Retrospective observational study describes viral variant distribution in Rio de Janeiro, indicating public health implications.

Key Points

  • This study aimed to describe the temporal distribution of SARS-CoV-2 variants in Rio de Janeiro from 2020 to 2021.
  • Retrospective observational study design examining samples from October 2020 to December 2021.
  • Analysis of 52 SARS-CoV-2-positive samples chosen from a larger pool of 19,022 tested samples.
  • Multiplex assays were used for viral detection targeting key genetic mutations.
  • Clinical data were collected via questionnaires during the acute phase and post-COVID-19 follow-up.
  • The Zeta (P.2) variant predominated from October to December 2020.
  • The Gamma (P.1) variant showed a higher frequency between March and May 2021.
  • Gamma variant was linked to persistent symptoms like fatigue and headache.

Cite This Study

Fajardo et al. (2026) studied this question.

synapsesocial.com/papers/69b4fbc1b39f7826a300c30ahttps://doi.org/10.1155/av/4934236
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