CDC: אפשר לדחות את החיסון השני עד 6 שבועות

https://www.nbcnews.com/health/health-news/timing-second-covid-vaccine-doesn-t-need-be-exact-just-n1255136

CDC says getting different vaccine for 2nd dose possible if there are shortages. The Centers for Disease Control and Prevention said in an update to its Covid-19 vaccine guidance that in "exceptional situations" people may receive a different vaccine for the second dose than they received for the first shot. https://www.nbcnews.com/news/us-news/live-blog/2021-01-22-covid-live-updates-vaccine-news-n1255262/ncrd1255347#liveBlogHeader