The CDC recommends that immunocompromised people age 65 and older should get a second dose of the 2024-2025 COVID vaccine.

For people aged 65 or older and those who are immunocompromised, the CDC now recommends receiving a second dose of this year's COVID vaccine six months after they get their first shot. The CDC still recommends that everyone ages 6 months and older get a current COVID-19 vaccine this fall.

Not everyone, of course, will be willing: Covid vaccine uptake has remained stubbornly low over the last few years. As of Oct. 12, only around 12 percent of adults reported receiving an updated vaccine, according to data from the C.D.C.