{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,21]],"date-time":"2026-02-21T08:03:56Z","timestamp":1771661036241,"version":"3.50.1"},"reference-count":31,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2022,1,8]],"date-time":"2022-01-08T00:00:00Z","timestamp":1641600000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100010854","name":"Jiangsu Provincial Commission of Health and Family Planning","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100010854","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100008832","name":"Nanjing Municipal Health Bureau","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100008832","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Medical Virology"],"published-print":{"date-parts":[[2022,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Since the pandemic of coronavirus disease\u201019 (COVID\u201019), the incidence of influenza has decreased significantly, but there are still few reports in the short period before and after the pandemic period. This study aimed to explore influenza activity and dynamic changes before and during the pandemic.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A total of 1\u2009324\u2009357 influenza\u2010like illness (ILI) cases were reported under the ILI surveillance network from January 1, 2018, to September 5, 2021, in Nanjing, of which 16\u2009158 cases were detected in a laboratory. Differences in ILI and influenza were conducted with the <jats:italic>\u03c7<\/jats:italic><jats:sup>2<\/jats:sup> test.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The number of ILI cases accounted for 8.97% of outpatient and emergency department visits. The influenza\u2010positive ratio (IPR) was 7.84% in ILI cases. During the COVID\u201019 pandemic, ILI% and IPR dropped by 6.03% and 11.83% on average, respectively. Besides this, IPR rose slightly in Week 30\u201335 of 2021. Not only differences in gender, age, and employment status, but also the circulating strains had changed from type A to B through the COVID\u201019 pandemic.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>The level of influenza activity was severely affected by COVID\u201019, but it seems\u00a0that it is inevitable to be vigilant against the co\u2010circulation in the future.<\/jats:p><\/jats:sec>","DOI":"10.1002\/jmv.27553","type":"journal-article","created":{"date-parts":[[2021,12,29]],"date-time":"2021-12-29T11:42:22Z","timestamp":1640778142000},"page":"1959-1966","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Epidemiology of influenza under the coronavirus disease 2019 pandemic in Nanjing, China"],"prefix":"10.1002","volume":"94","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9584-7113","authenticated-orcid":false,"given":"Kangjun","family":"Wu","sequence":"first","affiliation":[{"name":"School of Public Health Nanjing Medical University  Nanjing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoqing","family":"Wu","sequence":"additional","affiliation":[{"name":"Department of Acute Infectious Disease Control and Prevention Nanjing Municipal Center for Disease Control and Prevention  Nanjing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weixiang","family":"Wang","sequence":"additional","affiliation":[{"name":"Department of Acute Infectious Disease Control and Prevention Nanjing Municipal Center for Disease Control and Prevention  Nanjing China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3813-7112","authenticated-orcid":false,"given":"Lei","family":"Hong","sequence":"additional","affiliation":[{"name":"School of Public Health Nanjing Medical University  Nanjing China"},{"name":"Department of Disease Control and Prevention Nanjing Jiangbei New Area Center for Public Health Service  Nanjing China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2022,1,8]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1111\/irv.12565"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(17)33293-2"},{"issue":"8","key":"e_1_2_9_4_1","first-page":"560","article-title":"Estimating the disease burden of seasonal influenza in China, 2006\u20102019","volume":"101","author":"Gong H","year":"2021","journal-title":"Zhonghua Yi Xue Za Zhi"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S2468-2667(19)30163-X"},{"key":"e_1_2_9_6_1","unstructured":"World Health Organization. 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