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Vaccines May Not Work as Well on Variants, Hancock Says (2)

Jan. 24, 2021, 5:17 PM

The U.K.’s health minister warned that coronavirus vaccines may be less effective against new variants of the disease, such as those found in South Africa and Brazil, and that stricter border controls are justified.

“We don’t know the degree of that,” Matt Hancock said in an interview on Sky News on Sunday, commenting on the extent of any potential reduced efficacy of the vaccines. “In the meantime, we’ve got to have a precautionary principle that says let’s not bring these new variants back to the U.K.”

Hancock’s warning came as the U.K. reported it had vaccinated more than 5 million ...