Britain's Health Secretary Matt Hancock said Wednesday a new study suggesting that a single dose of the AstraZeneca vaccine may reduce transmission of COVID-19 categorically supports the government's strategy of taking more time between injections.
Some countries, including France, have authorized the AstraZeneca vaccine only for use in people under 65, saying there is not enough evidence to say whether it works in older adults.
AdBritain has Europe's deadliest coronavirus outbreak, with more than 108,000 deaths, and is in its third national lockdown as authorities try to contain a new, more transmissible virus variant first identified in southeast England.
AdThat is a worry as the U.K. races to vaccinate its own population against the virus.
Pollard said Oxford scientists believe the AstraZeneca vaccine will continue to offer protection against new variants of COVID-19, although they are still waiting for data on that.