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T1  - Effectiveness of 2 Influenza Vaccines in Nationwide Cohorts of Finnish 2-Year-Old Children in the Seasons 2015-2016 Through 2017-2018 
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UR  - http://hdl.handle.net/10138/324215 
T3  -  
A1  - Baum, Ulrike; Kulathinal, Sangita; Auranen, Kari; Nohynek, Hanna 
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Y1  - 2020 
LA  - eng 
AB  - Background. From 2015-2016 through 2017-2018, injectable, trivalent inactivated influenza vaccines (IIV3) and a nasal spray, tetravalent live-attenuated influenza vaccine (LAIV4) were used in parallel in Finland. To understand how well vaccination with each vaccine type protected children against influenza under real-life conditions, vaccine effectiveness in 2-year-olds was estimated for all 3 seasons. Methods. Each season, a nationwide register-based cohort study was conducted. The study popula... 
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KW  - 112 Statistics and probability; 3111 Biomedicine; vaccine effectiveness; influenza; children; cohort study; Finland 
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ER  -