SWINE INFLUENZA-VIRUS IN SWINE AND MAN IN ILLINOIS

  • 1 January 1981
    • journal article
    • research article
    • Vol. 23  (4) , 263-267
Abstract
Serum samples from 2091 persons from Illinois populations of swine abattoir employees, 4-H Club youths and their advisors, veterinary medical students, pork producers and veterinarians were tested for hemagglutination-inhibition [HI] antibodies to A/Swine/III./63. A total of 231 positive reactions of 1:20 or above were found (11%). The highest prevalence of antibody was found in veterinarians, followed by pork producers and future swine abattoir employees. Age-adjusted reactor rates were highest in pork producers. Of 305 abattoir employees from whom 2 serum samples were examined 26 (8.5%) had positive seroconversions. The abattoir population studied consisted largely of males under 40 yr of age. A low prevalence of antibody was found in veterinary medical students and none was found in 4-H Club youths having swine contact. In Illinois there apparently is occupational exposure of veterinarians, pork producers and swine abattoir employees.

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