Funnily enough, RFK Jr. is doing what he can to bring its human cousin back: "Me...

		tehjoker 9 days ago \| parent \| context \| favorite \| on: Scientist who helped eradicate smallpox dies at ag... Funnily enough, RFK Jr. is doing what he can to bring its human cousin back: "Measles virus evolved from the then-widespread rinderpest virus most probably between the 11th and 12th centuries."