“Masks are mainly for what we call source control. So, the person who’s infected doesn’t infect other people. We’re also finding that it offers some element of protection for the person who’s wearing the mask, even if they’re not infected. So, if an infected person and a noninfected person are both wearing masks, correctly, the chance of transmission is almost zero,” Segreti said. “Nothing is 100% but they will significantly decrease the transmission, especially if you’re the one that’s infected.”
