vaccines for COVID-19.The first vaccine, from drugmaker Pfizer, is expected to receive endorsement by a panel of Food and Drug Administration advisers as soon as this week, with delivery of 100 million doses — enough for 50 million Americans — expected in coming months.“Every American who wants the vaccine will be able to get the vaccine and we think by spring we're going to be in a position nobody would have believed possible just a few months ago," Trump said.Pfizer developed its vaccine outside of “Operation Warp Speed," but is partnering with the federal government on manufacturing and distribution.England began its first vaccinations earlier Tuesday, to great fanfare, as the world mounts its fight against the pandemic that has killed.