the same day that AstraZeneca and eight other drugmakers issued an unusual pledge, vowing to uphold the highest ethical and scientific standards in developing their vaccines.The announcement follows worries that President Donald Trump will pressure the U.S.
Food and Drug Administration to approve a vaccine before it’s proven to be safe and effective.The U.S. has invested billions of dollars in efforts to quickly develop multiple vaccines against COVID-19.
But public fears that a vaccine is unsafe or ineffective could be disastrous, derailing the effort to vaccinate millions of Americans.