Evan Pugh University Professor of Biology and Entomology, Eberly Professor of Biotechnology, Director, Huck Institutes of the Life Sciences, Penn State
17 Nov 2020 ... Virus evolution could undermine a COVID-19 vaccine – but this can be stopped ... A spontaneous mutation in the virus' genetic material prevented the drug from going ... smallpox vaccine, and no strain of the measles virus has ever arisen that can beat ... Likely, many candidates in the current portfolio will.