Washington, August 17

US health experts are expected to recommend Covid vaccine boosters for all Americans, regardless of age, eight months after they received their second dose of the shot, to ensure lasting protection as Delta spreads across the country.

Federal health officials have been actively looking at whether extra shots for the vaccinated would be needed, reviewing case numbers in the US as well as the situation in other countries such as Israel, where preliminary studies suggest the vaccine's protection against serious illness dropped among those vaccinated in January. — AP