Figure 1. Time series of weekly confirmed influenza cases in Japan from 2017 to the present. The notifications of influenza used in this study were obtained from the Infectious Disease Weekly Report, which was sourced from the National Epidemiological Surveillance of Infectious Diseases data published by the National Institute of Infectious Diseases, Japan under the Ministry of Health, Labor and Welfare, Japan (https://www.niid.go.jp/niid/en/survaillance-data-table-english.html).
From: Changing Seasonality of Influenza in the Post-COVID Era in Japan
