Fig. 1

HMPV prevalence among all-aged patients with ARTI in Beijing, China, from September 1, 2014, to December 31, 2024. a The number of patients with ARTI and the positivity rates of hMPV infection by month. b Average percentage of positive detections for hMPV among patients with ARTI per month during the prepandemic era from September 1, 2014, to December 31, 2019. c Monthly average positivity rates of hMPV in the prepandemic era, pandemic era, and postpandemic era. The dashed lines (panel b) denote the threshold of the hMPV positivity rate (1.7%) assigned in this study