e-Bulletin October 2025
RESEACH INSIGHTS |
Effectiveness of Influenza Vaccination in Hong Kong Children
Reducing Hospitalization Risk by Nearly 65% for Influenza A(H1N1) and Nearly 60% for Influenza A(H3N2)
A recent study from our School has provided local evidence on the effectiveness of influenza vaccination in protecting children from hospitalisation due to influenza A virus infection. The study analysed data from over 1,200 children hospitalised with febrile acute respiratory illness in Hong Kong between December 2024 and March 2025.
The results showed that influenza vaccination was highly effective in preventing hospitalisation related to influenza A(H1N1) and A(H3N2) in children. The study found that the vaccine was 64.8% effective against hospitalisation associated with influenza A(H1N1) and 59.9% effective against those associated with influenza A(H3N2).
This research highlights the importance of continued vaccination efforts in Hong Kong, particularly for children who are more vulnerable to severe influenza-related complications. These insights provided evidence for shaping public health strategies and immunization policies.
The findings were published in Science Direct. [link to the publication]
