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

Bissielo, A; Pierse, N; Huang, Q; Thompson, M; Kelly, H; Mishin, V; Turner, Nicola; SHIVERS

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

Bissielo, A ; Pierse, N ; Huang, Q ; Thompson, M ; Kelly, H ; Mishin, V ; Turner, Nicola ; SHIVERS

Identifier: http://hdl.handle.net/2292/28309

Issue Date: 2016-01-07

Reference: Eurosurveillance, 2016, 21 (1)

Rights: Copyright: European Centre for Disease Prevention and Control

Rights (URI): https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm

Abstract:

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 test-negative 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.

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