Study Shows Young COVID Survivors Can Get Reinfected
https://www.webmd.com/lung/news/20210204/study-young-covid-survivors-can-get-reinfected
Reinfected Marines also had lower levels of antibodies from their initial bout, compared with Marines who didn't get reinfected.
"Two-thirds of the 19 Marines who were reinfected didn't have measurable neutralizing antibodies," Sealfon noted, suggesting that some people who get infected don't generate antibodies.
The good news: Having antibodies after infection does protect you against reinfection. The bad news: Even if you've had COVID, there remains a risk you'll get it again.