AI Article Synopsis
- A study conducted across multiple European hospitals assessed the effectiveness of the influenza vaccine against the A(H3N2) strain during the 2016/17 season.
- Overall vaccine effectiveness (IVE) was found to be low, at 17%, with slightly higher effectiveness of 25% for those aged 65-79 years and lower effectiveness of 13% for individuals aged 80 and older.
- Experts recommend caution for the 2017/18 season because the vaccine composition for A(H3N2) has not changed, suggesting that effectiveness may remain low where this virus is common.
Article Abstract
In a multicentre European hospital study we measured influenza vaccine effectiveness (IVE) against A(H3N2) in 2016/17. Adjusted IVE was 17% (95% confidence interval (CI): 1 to 31) overall; 25% (95% CI: 2 to 43) among 65-79-year-olds and 13% (95% CI: -15 to 30) among those ≥ 80 years. As the A(H3N2) vaccine component has not changed for 2017/18, physicians and public health experts should be aware that IVE could be low where A(H3N2) viruses predominate.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5710120 | PMC |
| http://dx.doi.org/10.2807/1560-7917.ES.2017.22.41.17-00645 | DOI Listing |
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