The%20most%20promising%20coronavirus%20vaccine%20you%u2019ve%20never%20heard%20of%20-%20POLITICO

For the U.S., the Novavax shot could serve as an insurance policy in case supplies of the two mRNA vaccines — the workhorses of the country’s vaccination push — or the J&J shot falter. But many countries are not so fortunate. Thirty one percent of the billion vaccine doses administered worldwide have gone to North America, and just under 2 percent have gone to Africa.