CDC to Meet on Heart Risk; U.K. May Retain Curbs: Virus Update

U.S. President Joe Biden is preparing to join other Group of Seven leaders in a campaign to end the Covid-19 pandemic by distributing at least 1 billion extra shots to poorer nations by late next year. He announced the U.S. will begin shipping a half-billion doses of Pfizer Inc. vaccines to countries in “dire need” in August.

U.S. public health advisers will meet to discuss a potential link between Covid-19 shots that use messenger RNA technology and heart inflammation. Moderna Inc. filed for U.S. emergency-use authorization of its vaccine in adolescents.