FDA clears extra Covid-19 booster dose for some high-risk Americans

US regulators on Tuesday cleared another booster dose of the Pfizer or Moderna COVID-19 vaccines for older Americans and people with weak immune systems.

The Food and Drug Administration also took steps to make coronavirus vaccinations simpler for everyone, saying that anyone getting a Pfizer or Moderna dose whether it's a booster or their first-ever vaccination will get the newest formula, not the original shots.

The FDA said those 65 or older can opt to roll up their sleeves again for another booster as long as it's been at least four months since their first dose of the so-called bivalent vaccine that targets omicron strains.

And most people who are immune-compromised also can choose that extra spring booster at least two months after their first, with additional doses in the future at the discretion of their physician, the agency said.

If the Centers for Disease Control and Prevention signs off, those spring boosters could begin within days. The CDC's advisers are set to meet