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The general upward trend in the reported occurrence of tularemia from 1978 through 1984 appears to have stabilized at approximately 300 cases per year. Geographic distribution of the tularemia cases reported for 1984 is similar to that of previous years.

TYPHOID FEVER - Rates, by year, United States, 1955-1984

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Large outbreaks of typhoid fever occurred in Florida in 1973 and in Texas in 1981. For 1984, 390 cases were reported. Approximately 70% of the cases reported in the United States are acquired during foreign travel. The source of domestically acquired typhoid is usually a person who is a chronic carrier of Salmonella typhi, but in recent years some infections have been acquired in laboratories.

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For 1984, 53 cases of murine typhus were reported from six states. Thirty-seven of the cases were reported from Texas, eight from California, and five from Hawaii.

TYPHUS FEVER, TICK-BORNE (Rocky Mountain spotted fever) — Rates, by year, United

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A total of 838 cases of Rocky Mountain spotted fever were reported to CDC in 1984, for a rate of 0.36 cases/100,000 population.

TYPHUS FEVER, TICK-BORNE (Rocky Mountain spotted fever)
United States, 1984

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In 1984, 25% fewer cases of Rocky Mountain spotted fever were reported than in 1983, and all states reporting over 10 cases in 1984 reported either a decrease or no change in number of cases compared with 1983.

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