Protection of natural infection against reinfection with SARS-CoV-2 JN.1 variant
Hiam Chemaitelly,
Peter Coyle,
Mohamed Ali Ben Kacem
et al.
Abstract:This study investigated the effectiveness of natural infection in preventing reinfection with the JN.1 variant during a large JN.1 wave in Qatar, using a test-negative case-control study design. The overall effectiveness of previous infection in preventing reinfection with JN.1 was estimated at only 1.8% (95% CI: −9.3-12.6%). This effectiveness demonstrated a rapid decline over time since the previous infection, decreasing from 82.4% (95% CI: 40.9-94.7%) within 3 to less than 6 months after the previous infect… Show more
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