Mycobacterium Ulcerans Infection Among Tsetse Control Workers in Uganda

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Abstract
Forty-five cases of Mycobacterium ulcerans infection were recorded among 170 Ugandan tsetse control workers and their families during a period of forty-three months. There was a higher incidence of the disease in families using swamps as a domestic water source than in families using boreholes. In those using permanent swamps the incidence was higher than in those using seasonal swamps. These findings may be interpreted as showing an association between the frequency of the disease and the frequency with which people go to swamps; and they accord with the hypothesis that the disease is transmitted to man by contact with vegetation in and around swamps.