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Malaria surveillance : annual summary 1976
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Malaria surveillance : annual summary 1976
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    In 1976, 406 cases of malaria were reported in the United States, a 9.9% decrease compared with the 447 cases reported In 1975. Only 5 cases (1% of all cases reported In the United States) were in military personnel in 1976, the smallest number since 1959. As in previous years, imported Plasmodium vivax infections were more commonthan P. falciparum (66.5% versus 20.2%).

    In 3 instances infection was acquired in the United States: in 1 case infection was induced by transfusion and in 2 the disease was transmitted congenitally. Five deaths attributed to malaria were reported in 1976, compared with 4 in 1975. All deaths occurred in civilians; 4 patients were infected with P. falciparum, 1 patient with P. vivax. The P. falciparum malaria death-to-case ratio of 3.6% was higher than that in 1975 (0.9%), but did not differ significantly from the 10-year (1966-1975) ratio of 1.6%.

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