[PDF][PDF] Cohort study design for estimating the effectiveness of seasonal influenza vaccines in real time based on register data: The Finnish example

U Baum, K Auranen, S Kulathinal… - … journal of public …, 2020 - journals.sagepub.com
This paper presents the principles of implementing register-based cohort studies as
currently applied for real-time estimation of influenza vaccine effectiveness in Finland. All
required information is retrieved from computerised national registers and deterministically
linked via the unique personal identity code assigned to each Finnish resident. The study
cohorts comprise large subpopulations eligible for a free seasonal influenza vaccination as
part of the National Vaccination Programme. The primary outcome is laboratory-confirmed …
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