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Distribution of domestic rats with murine typhus antibodies in the United States
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January 1951
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Source: CDC Bull. 1951 Jan;10(1):13-18.
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Description:When cooperative State-Federal DDT dusting programs were initiated in the southeastern States for control of murine typhus fever, an evaluation program also was initiated to measure results. On these State programs, rats were caught, and blood was drawn from them and tested for the presence of murine typhus fever antibodies. This testing was done by the complement fixation method in all States except one in which the less reliable Weil-Felix method was used. The tests showed that the incidence of typhus antibodies was noticeably less in areas where ectoparasites were controlled than in areas where they were not (figure 1), and that in the former the number of human typhus cases was reduced remarkably. The tests also revealed many facts relative to the percentage of rats with murine typhus antibodies in various parts of the United States.
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