Influenza vaccine effectiveness in patients hospitalized with severe acute respiratory infection in Lithuania during the 2019–2020 influenza season: a test negative case – control study. - Vaikutyte, Roberta; Kuliese, Monika; Mickiene, Aukse; Jancoriene, Ligita; Zablockiene, Birute; Gefenaite, Giedre (Virology Journal, 2023)