Quoted: Thomas Friedrich is a professor of virology at the University of Wisconsin-Madison, and another study author. He said vaccination, while extremely effective, is not necessarily a magic shield.
“This does not indicate that the vaccine is not effective,” said Friedrich. “What it does mean is that in some people who are vaccinated — at least for a certain amount of time after infection — there’s enough virus around in their systems that they could pass the virus on to others.”
Dave O’Connor, also a UW-Madison professor of virology and the third co-author of the study, said it’s important to continue to recalibrate expectations as circumstances change.
“The vaccines are imperfect, but they’re still going to help keep me out of the hospital right now, and we should be really thankful for that,” said O’Connor. “But we also need to be on guard, because just because we might be done with the virus doesn’t mean the virus is done with us.”