Interim estimate of influenza vaccine effectiveness in hospitalised children, Hong Kong, 2017/18.
We conducted a hospital-based test-negative study in Hong Kong to estimate influenza vaccine effectiveness (VE) for the winter of 2017/18. The interim analysis included data on 1,078 children admitted between 4 December 2017 and 31 January 2018 with febrile acute respiratory illness and tested for influenza. We estimated influenza VE at 66% (95% confidence interval (CI): 43-79) overall, and 65% (95% CI: 40-80) against influenza B, the dominant virus type (predominantly B/Yamagata).
['Chiu|Susan S|SS|', 'Kwan|Mike Y W|MYW|', 'Feng|Shuo|S|', 'Wong|Joshua S C|JSC|', 'Leung|Chi-Wai|CW|', 'Chan|Eunice L Y|ELY|', 'Peiris|J S Malik|JSM|', 'Cowling|Benjamin J|BJ|']
D002648:Child D002675:Child, Preschool D005260:Female D006723:Hong Kong D006760:Hospitalization D006801:Humans D007223:Infant D009980:Influenza A virus D009981:Influenza B virus D007252:Influenza Vaccines D007251:Influenza, Human D008297:Male D062486:Public Health Surveillance D012621:Seasons D014611:Vaccination D064166:Vaccine Potency
vaccine effectiveness influenza virus public health test negative design vaccines and immunisation viral infections