Abstract
Ninety-six isolations of a small haemagglutinating virus were made from cases of infertility, abortions, stillbirths and neonatal losses in pig breeding herds. Isolation 59e 63 , selected as a prototype, multiplied in young, actively growing PK monolayer cultures producing intranuclear inclusions. It haemagglutinated the red blood cells of chick, rat, guinea-pig, human ‘O’, and rhesus and patas monkeys. The virus particle appeared to be 20 to 28 mμ in size, was ether and acid resistant and extremely heat resistant. Inhibition of multiplication by IUDR together with positive Feulgen staining indicated a DNA virus. These properties suggest that 59e 63 is a member of the picodna or parvo virus group.
Published Version
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