1. Interim estimate of influenza vaccine effectiveness in hospitalised children, Hong Kong, 2017/18.
- Author
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Chiu SS, Kwan MYW, Feng S, Wong JSC, Leung CW, Chan ELY, Peiris JSM, and Cowling BJ
- Subjects
- Child, Child, Preschool, Female, Hong Kong epidemiology, Humans, Infant, Influenza A virus immunology, Influenza B virus immunology, Influenza Vaccines immunology, Influenza, Human epidemiology, Influenza, Human prevention & control, Male, Public Health Surveillance, Seasons, Vaccine Potency, Hospitalization statistics & numerical data, Influenza A virus isolation & purification, Influenza B virus isolation & purification, Influenza Vaccines administration & dosage, Influenza, Human diagnosis, Vaccination
- Abstract
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).
- Published
- 2018
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