Francis Collins said before a Senate committee.
Late last month, AstraZeneca began recruiting 30, people in the U. It also is testing the vaccine, developed by Oxford University, in thousands of people in Britain and in smaller studies in Brazil and South Africa.
AstraZeneca said the pause in vaccinations covers studies in the U. Scientists around the world have been scrambling to develop a vaccine against the coronavirus since the outbreak began. Nearlydeaths have been reported in the pandemic.
Fauci sticks with projection of vaccine in Two other vaccines are in huge, final-stage tests in the United States, one made by Moderna Inc. Three additional experimental vaccines kåge single set to enter huge, late-stage testing later this year. Collins said Wednesday that the decision will be based on science alone and that he will roll up his sleeve to get vaccinated once that happens.
The U. But public fears that a vaccine is unsafe or ineffective could be disastrous, derailing the effort to vaccinate millions of Americans. The AP is solely responsible for all content.
More stories from WKBN.