Early season estimate of influenza vaccination effectiveness against influenza hospitalisation in children, Hong Kong, winter influenza season 2018/19.

Chiu SS., Kwan MY., Feng S., Chan EL., Chua H., Wong JS., Peiris JM., Cowling BJ.

The winter 2018/19 influenza season in Hong Kong has been predominated by influenza A(H1N1)pdm09 as at January 2019. We enrolled 2,016 children in three public hospitals in Hong Kong between 2 September 2018 and 11 January 2019. Using the test-negative approach, we estimated high early season effectiveness of inactivated influenza vaccine against influenza A or B of 90% (95% confidence interval (CI): 80-95%) and 92% (95% CI: 82-96%) against influenza A(H1N1)pdm09.

More information Original publication

DOI

10.2807/1560-7917.ES.2019.24.5.1900056

Type

Journal article

Publication Date

2019-01-01T00:00:00+00:00

Volume

Keywords

H1N1, Hong Kong, children, hospital, inactivated influenza vaccination, influenza, public health, vaccine effectiveness, winter, Adolescent, Case-Control Studies, Child, Child, Preschool, Female, Hong Kong, Hospitalization, Humans, Infant, Influenza A Virus, H1N1 Subtype, Influenza A virus, Influenza B virus, Influenza Vaccines, Influenza, Human, Male, Public Health Surveillance, Seasons, Vaccination, Vaccine Potency, Vaccines, Inactivated