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Effectiveness of seasonal influenza vaccine in preventing influenza primary care visits and hospitalisation in Auckland, New Zealand in 2015: Interim estimates

Preliminary results for influenza vaccine effectiveness (VE) against acute respiratory illness with circulating laboratory-confirmed influenza viruses in New Zealand from 27 April to 26 September 2015, using a case testnegative design were 36% (95% confidence interval (CI): 11–54) for general practice encounters and 50% (95% CI: 20–68) for hospitalisations. VE against hospitalised influenza A(H3N2) illnesses was moderate at 53% (95% CI: 6–76) but improved compared with previous seasons.

Eurosurveillance 21(1)
Bissielo A, Pierce N, Huang Q, Thomson M, Kelly H, Mishin V and Turner N on behalf of the SHIVERS investigation team
07 January 2016
Type of Research 
Publication Date 
Thursday, January 7, 2016

Last updated: Sep 2018