The agency recommends manufacturers update their vaccines to target the JN.1 strain. At the same time, HHS head Robert F. Kennedy Jr. is removing guidance that healthy children and pregnant women receive COVID shots.

As the Trump administration moves to limit COVID booster vaccines for some, here's what to know about the latest variant NB.1.8.1 and its symptoms.

If coronavirus vaccines are restricted to seniors and those at high risk, parents of young children and relatives of medically vulnerable people face a higher bar for shots.

In calling for more clinical testing of vaccines in younger people and those who face a low risk of severe disease from Covid-19, the FDA said its policy will compel generation of more evidence for these groups.

The FDA picked the LP.8.1 Covid strain for the fall vaccines, fueling concerns that the shots may be limited to only the most at-risk Americans this fall.

The Food and Drug Administration says it has decided to continue approving COVID-19 vaccine updates for seniors and others at higher risk of severe disease, but will require vaccine makers to conduct major new clinical trials before approving them for wider use.

The US Food and Drug Administration will now require Covid-19 vaccines from Pfizer/BioNTech and Moderna to use expanded warning labels with more information about the risk of a rare heart condition after vaccination.