U.S. To Send 20M Vaccine Doses Abroad By End Of June

So far, the U.S. has shared about 4.5 million AstraZeneca shots with Canada and Mexico.

President Biden says 60 percent of American adults have received at least one dose of the COVID vaccine. Experts say as much as 80 percent of people need to be fully vaccinated for herd immunity. Meanwhile the U.S. is also planning to give other countries about 20 million doses of the Pfizer, Moderna and Johnson and Johnson vaccines.