偏肺病毒
爆发
医学
变性肺病毒
2019年冠状病毒病(COVID-19)
病毒学
流行病学
严重急性呼吸综合征冠状病毒2型(SARS-CoV-2)
传染病(医学专业)
儿科
呼吸道感染
疾病
呼吸系统
内科学
作者
Yuya Fukuda,Atsuo Togashi,Satoshi Hirakawa,Masaki Yamamoto,Shinobu Fukumura,Tomohiro Nawa,Saho Honjo,Jun Kunizaki,Kouhei Nishino,Toju Tanaka,Toshitaka Kizawa,Daisuke Yamamoto,Ryoh Takeuchi,Yuta Sasaoka,Masayoshi Kikuchi,Takuro Ito,Koutatsu Nagai,Hirofumi Asakura,Kentarou Kudou,Masaki Yoshida,Toshirou Nishida,Takeshi Tsugawa
摘要
Abstract Following the coronavirus disease 2019 (COVID‐19) outbreak in February 2020, incidences of various infectious diseases decreased notably in Hokkaido Prefecture, Japan. However, Japan began gradually easing COVID‐19 infection control measures in 2022. Here, we conducted a survey of children hospitalized with human metapneumovirus (hMPV), influenza A and B, and respiratory syncytial virus infections in 18 hospitals across Hokkaido Prefecture, Japan, spanning from July 2019 to June 2023. From March 2020 to June 2022 (28 months), only 13 patients were hospitalized with hMPV, and two patients had influenza A. However, in October to November 2022, there was a re‐emergence of hMPV infections, with a maximum of 27 hospitalizations per week. From July 2022 to June 2023 (12 months), the number of hMPV‐related hospitalizations dramatically increased to 317 patients, with the majority aged 3–6 years (38.2%, [121/317]). Influenza A also showed an increase from December 2022, with a peak of 13 hospitalizations per week in March 2023, considerably fewer than the pre‐COVID‐19 outbreak in December 2019, when rates reached 45 hospitalizations per week. These findings suggest the possibility of observing more resurgences in infectious diseases in Japan after 2023 if infection control measures continue to be relaxed. Caution is needed in managing potential outbreaks.
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