Combined effectiveness of prior and current season influenza vaccination in northern Spain: 2016/17 mid-season analysis.

Combined effectiveness of prior and current season influenza vaccination in northern Spain: 2016/17 mid-season analysis.
Euro Surveill. 2017 Feb 16;22(7):
Authors: Castilla J, Navascués A, Casado I, Díaz-González J, Pérez-García A, Fernandino L, Martínez-Baz I, Aguinaga A, Pozo F, Ezpeleta C, Primary Health Care Sentinel Network, Network for Influenza Surveillance in Hospitals of Navarre
Abstract
The 2016/17 mid-season vaccine effectiveness estimate against influenza A(H3N2) was 15% (95% confidence interval: -11 to 35) in Navarre. Comparing to individuals unvaccinated in the current and four prior seasons, effectiveness was 24% for current and 3-4 prior doses, 61% for current and 1-2 prior doses, 42% for only current vaccination, and 58% for 3-4 prior doses. This suggests moderate effectiveness for different combinations of vaccination in the current and prior seasons.
PMID: 28230523 [PubMed - in process]

Source: Euro Surveill - February 15, 2017 Category: Infectious Diseases Authors: Castilla J, Navascués A, Casado I, Díaz-González J, Pérez-García A, Fernandino L, Martínez-Baz I, Aguinaga A, Pozo F, Ezpeleta C, Primary Health Care Sentinel Network, Network for Influenza Surveillance in Hospitals of Navarre Tags: Euro Surveill Source Type: research