Some people test positive after getting a Covid-19 vaccine. Here’s why.

CNN — A Covid-19 vaccine does not provide full or immediate protection, which means it’s still possible to get infected and test positive for the virus.Democratic Rep. Stephen Lynch of Massachusetts did. The first dose may provide some protection, but as the Moderna CEO, Stephane Bancel said Monday “but we really just don’t have any data to prove that at this point.” For Pfizer, after 14 days the first dose was around 52% effective at preventing disease, Salata, who was the lead investigator for the Pfizer vaccine at his hospital, said. “But focusing on the efficacy number doesn’t paint the whole picture, because you could still end up with Covid, but by all indications that appears that those cases are still really less severe than unvaccinated people and that’s really important.” The vaccine makers are still studying if the vaccines just keep people from getting really sick or if they totally protect from infection. One of the study authors, Dr. Eyal Leshem of Sheba Medical Center in Israel, said it was clear that some of the workers that tested positive “were actually infected with Covid before they get their first dose.” The variant question There’s concern that certain variants that have been spreading in the US could be less susceptible to the protection that comes from vaccines.