Extended Data Table 1 Study population characteristics

From: Differential protection against SARS-CoV-2 reinfection pre- and post-Omicron

  1. Characteristics of matched cases and controls in samples used to estimate the effectiveness of a) a pre-omicron infection in preventing reinfection with a pre-omicron virus and b) an omicron infection in preventing reinfection with an omicron virus.
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