Fig. 2

The time series of close contacts by the calendar date of having contact with a source case, stratified by RT-PCR testing status (test-positive in red, and test-negative in cyan) for SARS-CoV-2 infection, and vaccine doses (2 doses in A, and 3 doses in B) received before having contact. C Showed the cumulative incidence of SARS-CoV-2 Omicron infections stratified by vaccine doses