Connor says the approach can work with some stages of the viral life cycle but not with others, and experiments on a pseudotype will always have to be confirmed using the actual virus; sometimes the two organisms behave differently. (scientificamerican.com)
As a final confirmation of the compound's potential to stop a virus from spreading, they tested it against an actual virus: the nonpathogenic vaccine strain of the Junin virus. (sciencedaily.com)
A few individuals from three different kinds of fruit bats tested positive for an immune response to the disease or had pieces of its RNA in their cells, although no one has yet found the actual virus in these bats. (scientificamerican.com)