The year after the disease was identified conclusively as being caused by a virus, they showed that the African and South American viruses are immunologically identical
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The year after the disease was identified conclusively as being caused by a virus, they showed that the African and South American viruses are immunologically identical
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-17 from Wikipedia. The archived copy is preserved so this citation survives link rot.