The incidence of hepatitis in Sweden is relatively low, but an outbreak associated with the consumption of infected oysters occurred in 1955.
Subsequently, an increasing incidence was noted among track-finders. Methods of eliminating cross-infection by traces of blood among the runners greatly reduced this incidence.
Since 1964, hepatitis associated with haemodialysis and with narcotic addiction has become common.
The changes in the epidemiological pattern during the last 20 years are discussed.
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