Influence of Prior SARS-CoV-2 Infection on COVID-19 Severity: Evidence from the National COVID Cohort Collaborative.
Nathaniel HendrixHythem SidkyDavid K Sahnernull nullPublished in: medRxiv : the preprint server for health sciences (2024)
In the pandemic's first two years, previously infected patients generally had less severe disease than people without prior infection. During the Omicron era, however, previously infected patients had the same or worse severity of disease as patients without prior infection.