Other Animal Disease — Brazil
After several pox outbreaks in horses and donkeys in Brazil, researchers are still working to understand how the equids got the vaccinia virus, why humans don’t seem to get it from equids, and why some equids get it in a population and others don’t.
Scientists eradicated smallpox, caused by the variola virus, in the 1980s using a similar virus that caused pox in horses, cows, and rodents. Unfortunately, that similar virus — vaccinia — could very well have started its own series of pox
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