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Protective effect of BCG vaccination in Norway 1956-73
1National Health Screening Service, Oslo, Norway.
Tubercle
|June 1, 1988
Abstract:
The protective effect of BCG vaccination in Norway in the first 10 years after vaccination is estimated to have been 80%. The effect was higher during the first 5 years after vaccination than during the next 5 years. Restricting the calculation to infectious cases only the protective effect was 60%.