Abstract
Moura, Roberto A. (Chas. Pfizer and Company, Inc., Terre Haute, Ind.) and Joel Warren. Subclinical infection of dogs by canine-adapted measles virus evidenced by their subsequent immunity to canine distemper virus. J. Bacteriol. 82:702–705. 1961.—Young dogs were inoculated with virulent measles virus which had been adapted to canine kidney or human amnion cell culture. None of the animals showed any clinical symptoms nor could virus be isolated from the blood, although measles-neutralizing and complement-fixing antibodies developed during convalescence. All dogs failed to develop antibody to canine distemper. However, when these and normal control animals were subsequently inoculated intracerebrally with virulent distemper virus, each of the controls succumbed to typical symptoms, whereas all of the measles-immune dogs survived. These results suggest that the cross-protection conferred by measles against canine distemper virus infection involves factors other than humoral antibody. The immunity persists for a considerable length of time.
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Selected References
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