Incidence rates of influenza illness during pregnancy in Suzhou, China, 2015-2018
© 2021 The Authors. Influenza and Other Respiratory Viruses published by John Wiley & Sons Ltd..
BACKGROUND: Data on influenza incidence during pregnancy in China are limited.
METHODS: From October 2015 to 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 28 years old, 37% in first trimester, 48% in second trimester, and 15% in third trimester, with seven self-reported influenza vaccination during pregnancy. In the 18-week epidemic period during October 2015 to September 2016, influenza incidence was 0.7/100 person-months (95% CI: 0.5-0.9). In the cumulative 29-week-long epidemic during October 2016 to 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 to 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 <5.1% required hospitalization.
CONCLUSIONS: Influenza illness in all trimesters of pregnancy was common. These data may help inform decisions regarding the use of influenza vaccine to prevent influenza during pregnancy.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:16 |
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| Enthalten in: |
Influenza and other respiratory viruses - 16(2022), 1 vom: 20. Jan., Seite 14-23 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Chen, Liling [VerfasserIn] |
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| Links: |
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| Themen: |
Active surveillance |
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| Anmerkungen: |
Date Completed 02.05.2022 Date Revised 02.05.2022 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1111/irv.12888 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM328680052 |
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| 245 | 1 | 0 | |a Incidence rates of influenza illness during pregnancy in Suzhou, China, 2015-2018 |
| 264 | 1 | |c 2022 | |
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| 500 | |a Date Completed 02.05.2022 | ||
| 500 | |a Date Revised 02.05.2022 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2021 The Authors. Influenza and Other Respiratory Viruses published by John Wiley & Sons Ltd. | ||
| 520 | |a BACKGROUND: Data on influenza incidence during pregnancy in China are limited | ||
| 520 | |a METHODS: From October 2015 to 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 | ||
| 520 | |a RESULTS: In total, we enrolled 18 724 pregnant women median aged 28 years old, 37% in first trimester, 48% in second trimester, and 15% in third trimester, with seven self-reported influenza vaccination during pregnancy. In the 18-week epidemic period during October 2015 to September 2016, influenza incidence was 0.7/100 person-months (95% CI: 0.5-0.9). In the cumulative 29-week-long epidemic during October 2016 to 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 to 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 <5.1% required hospitalization | ||
| 520 | |a CONCLUSIONS: Influenza illness in all trimesters of pregnancy was common. These data may help inform decisions regarding the use of influenza vaccine to prevent influenza during pregnancy | ||
| 650 | 4 | |a Journal Article | |
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| 700 | 1 | |a Zhang, Zhongwei |e verfasserin |4 aut | |
| 700 | 1 | |a Wang, Yan |e verfasserin |4 aut | |
| 700 | 1 | |a Tan, Yayun |e verfasserin |4 aut | |
| 700 | 1 | |a Song, Ying |e verfasserin |4 aut | |
| 700 | 1 | |a Cui, Pengwei |e verfasserin |4 aut | |
| 700 | 1 | |a Pang, Yuanyuan |e verfasserin |4 aut | |
| 700 | 1 | |a Liu, Cheng |e verfasserin |4 aut | |
| 700 | 1 | |a Qin, Jiangchun |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Ping |e verfasserin |4 aut | |
| 700 | 1 | |a Thompson, Mark G |e verfasserin |4 aut | |
| 700 | 1 | |a Iuliano, A Danielle |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Ran |e verfasserin |4 aut | |
| 700 | 1 | |a Greene, Carolyn M |e verfasserin |4 aut | |
| 700 | 1 | |a Zhang, Jun |e verfasserin |4 aut | |
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