COVID-19 variants aren't as scary as they sound.
Doctor Carlos Del Rio with the Infectious Diseases Society of America says it's normal for these types of viruses to mutate.
COVID-19 variants aren't as scary as they sound.
Doctor Carlos Del Rio with the Infectious Diseases Society of America says it's normal for these types of viruses to mutate.
Researchers are still gathering information about the new variants popping up on England and Brazil, including whether it might..