Abstract

Guinea pigs from a Guatemalan colony died after subcutaneous inoculating of moderately small doses of equine-benign strains of Venezuelan encephalitis (VE) virus of hemagglutination-inhibition subtype I-E from enzootic habitats in Mexico and Guatemala. Thus these guinea pigs were unlike English short hair and inbred 13 guinea pigs, which usually survive infections with equine-benign VE strains of subtype I-E. We therefore caution others that not all strains of guinea pigs can be used to evaluate the potential equine virulence of VE viruses.

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