specifically they believe that the pfizer and moderna vaccines were so effective that after just one dose, we should given a shot to as many as possible and come back for a second as more is available. it is an approach taken by our allies across the pobd. while manufacturer wait only about a month in between both doses, the uk extended it to 12 week. and scientific advisers there said that this would provide protection to as many people as possible in the early stages of the vaccine rollout. but the wall street journal published a piece titled u.s. government scientists scepkept krepts skrecht cal and that they are pushing back against the one dose vaccine saying that there not enough evidence for long term protection. among those quoted, peter marx who said that they need to be used to prevent covid-19 and related hospitaliza hospital la death. and also peter hof also said that those clinical trials found a level of one dose significantly less than what they got with two.