The South African Health Products Regulatory Authority, or SAHPRA, said in a statement Tuesday that the request for Sputnik V to be authorized could "not be approved at this time," referring to past failed HIV vaccines that used a similar technology.
Federal regulators are expected to authorize the mixing and matching of COVID-19 booster shots this week in an effort to provide flexibility for those seeking to maintain protection against the coronavirus.
Police departments around the U.S. that are requiring officers to get vaccinated against COVID-19 are running up against pockets of resistance that some fear could leave law enforcement shorthanded and undermine public safety.
U.S. health advisers said Thursday that some Americans who received Moderna's COVID-19 vaccine -- including seniors, adults with other health problems, and people with jobs or living situations that put them at increased risk for COVID-19 -- should get a half-dose booster to bolster protection against the virus.
Nurses around the U.S. are getting burned out by the COVID-19 crisis and quitting, yet applications to nursing schools are rising, driven by what educators say are young people who see the global emergency as an opportunity and a challenge.