ARI SHAPIRO, HOST:
There's more potentially worrisome news today for vaccinated people. In very rare cases, they may be at risk for long COVID symptoms. NPR health correspondent Rob Stein joins us with the details.
ROB STEIN, BYLINE: Hey there, Ari.
SHAPIRO: So yesterday, the CDC revealed the troubling news that fully vaccinated people might still be able to spread the virus. What's new today?