Some Americans should get more than one shot of the updated COVID-19 vaccines because their age or certain health conditions make them more vulnerable to severe infections, U.S. health officials advised this week.

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.

Immunocompromised people and those who are over 65 years of age or older should get a second dose of this year’s COVID-19 vaccine - according to the latest recommendations from the US Centers for Disease Control and Prevention.