| Autor: |
Yan Wang, Mark G. Thompson, Ran Zhang, Carolyn M. Greene, Yayun Tan, Jiangchun Qin, Zhongwei Zhang, Jun Zhang, Yuanyuan Pang, Liling Chen, Suizan Zhou, Cheng Liu, Ying Song, Ping Zhang, Angela D. Iuliano, Lin Bao, Alexander J. Millman, Pengwei Cui |
| Rok vydání: |
2021 |
| Předmět: |
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| Popis: |
Background: Data on influenza incidence during pregnancy in China are limited. Methods: From October 2015–September 2018, we conducted active surveillance for acute respiratory illness (ARI) among women during pregnancy. Nurses conducted twice weekly phone and text message follow-up upon enrollment until delivery to identify new episodes of ARI. Nasal and throat swabs were collected ≤10 days from illness onset to detect influenza. Results: In total, we enrolled 18,724 pregnant women median aged 28yo, 37% in first trimester, 48% in second trimester and 15% in third trimester, with 7 self-reported vaccination during pregnancy. In the 18-week epidemic period during October 2015–September 2016, influenza incidence was 0.7/100 person-months (95% CI:0.5–0.9). In the 29-week epidemic during October 2016–September 2017, influenza incidence was 1.0/100 person-months (95% CI:0.8–1.2). In the 11-week epidemic period during October 2017–September 2018, influenza incidence was 2.1/100 person-months (95% CI:1.9–2.4). Influenza incidence was similar by trimester. More than half of the total influenza illnesses had no elevated temperature and cough. Most influenza-associated ARIs were mild, and |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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