UK to test mixed COVID-19 vaccine dosing strategy

In the latest global COVID-19 developments, the United Kingdom today announced the launch of the first study to explore giving different COVID-19 vaccines in a two-dose regimen, and a new study added more evidence that the B117 variant is deadlier than the standard version of the virus. The trial of a mixed-vaccine strategy comes as governments look for ways to protect as many people as possible as quickly as possible with vaccines, amid short supply and the threat of more contagious and lethal coronavirus variants.