Seasonal influenza vaccine effectiveness against laboratory-confirmed influenza in 2015-2016 : A hospital-based test-negative case-control study in Lithuania
Objective A case-control study was conducted to assess seasonal influenza vaccine effectiveness (SIVE) during the 2015-2016 influenza season. Methods A study was performed in three departments in Lithuania between 1 December 2015 and 1 May 2016. Data on demographic and clinical characteristics including influenza vaccination status were collected from the patients recommended to receive the season
