Weiss, K.E.; Haig, D.A.; Alexander, R.A.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E.
(Published by The Government Printer, Pretoria, 1956)
1. There has been isolated from a lamb a pantropic virus with neurotropic
properties and a well-marked affinity for embryonic tissue.
2. In the field the vectors are mosquitoes which have yet to be identified
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