Background Influenza vaccine coverage remains low in China, and there is limited
information on the preventive value of local vaccination programs. Methods As part of …

Influenza vaccination is the most effective way of preventing influenza infections but its
coverage is extremely low in China. Poor influenza vaccine effectiveness (VE) was reported …

Background Vaccination is recommended to prevent influenza virus infection and
associated complications. This study aimed to estimate the influenza vaccine effectiveness …

Background The objective of this study was to estimate influenza vaccine effectiveness (VE)
for the 2016/17 epidemic of co-circulating influenza A (H1N1) pdm09 and A (H3N2) viruses …

Background Estimates of influenza vaccination effectiveness (VE) are valuable for
populations where the vaccine has been promoted in order to support vaccination policy …

Influenza in the tropics occurs year round with peaks that correspond variably to temperate
regions. However, data on influenza vaccine effectiveness (VE) in the tropics is sparse. We …

We assessed the influenza vaccine effectiveness (VE) of an inactivated quadrivalent
influenza vaccine in adult patients, in our test-negative case-control design study based on …

Influenza A (H1N1) pdm09 and A (H3N2) viruses both circulated in Europe in October 2018–
January 2019. Interim results from six studies indicate that 2018/19 influenza vaccine …

Background Concerns have been raised about intraseasonal waning of the protection
conferred by influenza vaccination. Methods During four influenza seasons, we …

Background The effectiveness of currently licensed vaccines against influenza has not been
clearly established, especially among individuals at increased risk for complications from …