Fig. 2From: Alterations in the respiratory tract microbiome in COVID-19: current observations and potential significanceAssociations between oropharyngeal microbiome features and COVID-19 severity. Analytical approaches and statistical methods varied among studies; results tabulated reflect the authors’ conclusions. Disease severity comparisons varied and included asymptomatic vs symptomatic, moderate vs severe, alive vs dead, and others. The sample size refers to the number of COVID-19 patients onlyBack to article page