Thats Evolving News Today

Nation," hes also a pfizer board member. take a listen. >> given the fact thats changing, thats evolving. new data is accruing, its hard for fda to give a fixed snapshot of what the efficacy of this clinical data set so if they wait a little longer, if they administer the third dose in that clinical trial, theyre not only going to have perhaps a better measure of effectiveness from this trial, but theyll also have a data set, a firm picture of what level of effectiveness the vaccine is deliverin...