Volume 29, Number 9—September 2023
Dispatch
Infection-Induced SARS-CoV-2 Seroprevalence among Blood Donors, Japan, 2022
Figure 2

Figure 2. Analyses of weighted seroprevalence of SARS-CoV-2 among blood donors from November 6–13, 2022, compared with reported cases among the general population, Japan. A) Weighted seroprevalence by prefecture. B) Relationship between population density (persons/km2) and weighted seroprevalence by prefecture. Circle sizes indicate percentage of infected persons based on cumulative number of reported cases; colors indicate vaccination coverage for >3 doses of COVID-19 vaccine. C) Ratio of weighted seroprevalence to the percentage of cumulative number of reported cases (estimated to reported infections) by prefecture. D) Relationship between weighted seroprevalence and percentage of cumulative number of reported cases by prefecture. Circle sizes represent absolute value of cumulative number of reported cases.
1These senior authors contributed equally to this article.