Open AccessSeroprevalence of H7N9 infection among humans: A systematic review and meta‐analysis
Author(s) -
Wang Qiang,
Xu Ke,
Xie Weihua,
Yang Liuqing,
Chen Haiyan,
Shi Naiyang,
Bao Changjun,
Huang Haodi,
Zhang Xuefeng,
Liao Yilan,
Jin Hui
Publication year - 2020
Publication title -
influenza and other respiratory viruses
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.743
H-Index - 57
eISSN - 1750-2659
pISSN - 1750-2640
DOI - 10.1111/irv.12736
Subject(s) - seroprevalence , meta analysis , confidence interval , population , asymptomatic , medicine , virology , demography , veterinary medicine , serology , immunology , environmental health , antibody , sociology
In spring 2013, a novel avian‐origin influenza A (H7N9) virus emerged in mainland China. The burden of H7N9 infection was estimated based on systematic review and meta‐analysis. The systematic search for available literature was conducted using Chinese and English databases. We calculated the pooled seroprevalence of H7N9 infection and its 95% confidence interval by using Freeman‐Tukey double arcsine transformation. Out of 16 890 records found using Chinese and English databases, 54 articles were included in the meta‐analysis. These included studies of a total of 64 107 individuals. The pooled seroprevalence of H7N9 infection among humans was 0.122% (95% CI: 0.023, 0.275). In high‐risk populations, the highest pooled seroprevalence was observed among close contacts (1.075%, 95% CI: 0.000, 4.357). The seroprevalence among general population was (0.077%, 95% CI: 0.011, 0.180). Our study discovered that asymptomatic infection of H7N9 virus did occur, even if the seroprevalence among humans was low.