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POLIOMYELITIS (Paralytic) – Roported cases, by area and age group, United States, 1984

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Eight cases of paralytic poliomyelitis were reported for 1984; one patient, a recipient of OPV, had onset of illness in 1982. Of the seven cases with onset in 1984, six were classified as endemic: three patients were recipients of OP one was a household contact of an OPV recipient, and one was an immune-deficient, non-household contact of an OPV recipient. One case was classified as not vaccine-associated. This patient had a history of contact with an OPV recipient who had been vaccinated 69 days before. A vaccine-related poliovirus was isolated from this patient. Vaccine-related polioviruses were also isolated from two of the OPV recipients, the household contact, and the immune-deficient patient. The one imported case occurred in a patient whose illness began outside the country.

'A case is defined as vaccine-associated when contact with an OPV recipient occurs within 30 days before onset of illness, and onset of illness occurs 4-60 days after administration of OPV to recipient.

PSITTACOSIS – Cases, by year, United States, 1955-1984

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The number of reported cases of psittacosis (172 cases in 1984) appears to have stabilized for the past 7 years at a level about double that for the 1960s. Although most reported cases were associated with exposure to pet birds, outbreaks among employees of the turkeyprocessing industry accounted for many of the human cases reported in 1974, 1976, 1981, and 1984.

RABIES – Cases in wild and domestic animals, by year, United States, 1965-1984

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Three cases of human rabies were reported in 1984. Two cases (Texas, Pennsylvania) occurred in children with no known history of exposure to a rabid animal. The third case involved a Guatemalan exposed in Guatemala and diagnosed in California.

There were 5,627 reported cases of animal rabies in the United States and Puerto Rico in 1984, a decline of 301 cases from 1983. Fewer rabies cases were reported for most species.

RABIES 1984

Reported cases in animals, by area and species of animal, United States,

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RUBELLA (German measles) – Rates, by yoar, United States, 1966-1984

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REPORTED CASES PER 100,000 POPULATION

REPORTED CASES (THOUSANDS)

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In 1984, the total of 752 cases of rubella reported in the United States was the lowest since rubella became a nationally notifiable disease in 1966. The represents a decrease of 22.5% from the 1983 total of 970 cases and a 98.7% decline from 1969, the year of rubella vaccine licensure. The reported incidence for 1984 is 0.32 cases/100,000 population.

Twelve states and the District of Columbia reported no rubella cases in 1984, compared with 14 reporting areas in 1983. The number of counties reporting rubella continued to decline from 284 (9.0%) in 1983 to 219 (7.0%) in 1984.

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