Summary
Five strains of monkey pox viruses were compared with respect to their cultural characteristics in primary and continuous cell cultures and the lesions developed in embryonated eggs and in rabbit skin as well as to their hemagglutinating activity.
Four strains (“Copenhagen” “65-31” “65-32” and “7-61”) appeared to be similar in their properties. The cytopathogenic effect (CPE) was identical to that induced by vaccinia virus. There was no detectable virus multiplication in an pig kidney cell line (PEK). All four strains produced small, white, compact, hemorrhagic pock-like lesions on the chorioallantoic membrane.
The strain “64–7275”, isolated from healthy monkeys kidneys, had all properties of variola virus. It multiplied in the PEK cell line with a CPE. The lesions on the CAM were more compact without hemorrhage. In rabbit skin no detectable reaction occurred after infection with this strain.
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Marennikova, S.S., Gurvich, E.B. & Shelukhina, E.M. Comparison of the properties of five pox virus strains isolated from monkeys. Archiv f Virusforschung 33, 201–210 (1971). https://doi.org/10.1007/BF01254676
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DOI: https://doi.org/10.1007/BF01254676