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Malaria surveillance : 1971 annual report
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Malaria surveillance : 1971 annual report
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    In 1971, 3,047 cases of malaria were reported in the United States. This represents a 23.8 percent decrease as compared with the 3,997 cases reported for a similar period in 1970. This decline was due entirely to decreasing numbers of military cases imported from Vietnam. Army personnel accounted for 84.1 percent of the military malaria from Vietnam and Marines 7.5 percent. In 1971, 92.8 percent of all cases reported in the United States were acquired in Vietnam. As in prior years, imported Plasmodium vivax infections were more common than P. falciparum (82.8 percent vs. 11.0 percent).

    There were 191 civilian cases of malaria, as compared with 125 cases for 1970. This increase was primarily due to the 57 cases acquired in the USA, the highest total since at least 1953. Of the 57 cases, 46 were needle induced, nine were acquired through blood transfusion, one through accidental needle prick, and one was classified as cryptic. £. vivax was the species in 53 of the cases acquired in the USA.

    There were eight malaria deaths. Five were due to £. falciparum: two occurred

    in tourists who visited malarious areas; two were in Vietnam veterans; one fatality occurred in a seaman whose ship was en route from West Africa to Puerto Rico and his illness may have been complicated by the illicit use of narcotics. One person died of P. vivax acquired through blood transfusion; he had had a prior splemectomy and myocardial infarction. Two persons died from apparently ruptured spleens : in one case P. vivax was found, but in the other cases the species of Plasmodium could not be identified.

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