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High and Rapid Increase in Seroprevalence for SARS-CoV-2 in Conakry, Guinea: Results From 3 Successive Cross-Sectional Surveys (ANRS COV16-ARIACOV).

Abou Aissata SoumahMamadou Saliou Kalifa DialloEmilande GuichetDavid MamanGuillaume ThaurignacAlpha Kabinet KeitaJulie BouillinHaby DialloRaphael PelloquinAhidjo AyoubaCece KpamouMartine PeetersEric DelaporteJean-Francois EtardAbdoulaye Toure
Published in: Open forum infectious diseases (2022)
We conducted 3 successive seroprevalence surveys, 3 months apart, using multistage cluster sampling to measure the extent and dynamics of the severe acute respiratory syndrome coronavirus 2 epidemic in Conakry, the capital city of Guinea. Seroprevalence increased from 17.3% (95% CI, 12.4%-23.8%) in December 2020 during the first survey (S1) to 28.9% (95% CI, 25.6%-32.4%) in March/April 2021 (S2), then to 42.4% (95% CI, 39.5%-45.3%) in June 2021 (S3). This significant overall trend of increasing seroprevalence ( P  < .0001) was also significant in every age class, illustrating a sustained transmission within the whole community. These data may contribute to defining cost-effective response strategies.
Keyphrases
  • respiratory syndrome coronavirus
  • sars cov
  • cross sectional
  • coronavirus disease
  • healthcare
  • deep learning
  • big data
  • sensitive detection