Fig. 5From: COVID-19 pandemic vaccination strategies of early 2021 based on behavioral differences between residents of Tokyo and Osaka, JapanFourth wave of the COVID-19 epidemic in Tokyo and Osaka. Infected people in (a) Tokyo and (b) Osaka, and (c) the basic reproduction number (bar) and generation-specific basic reproduction number. The u20 denotes under 20 years of age and the o60 denotes over 60 years of ageBack to article page