Bins of syringes for the Pfizer BioNtech and Moderna Inc. Covid-19 vaccines in Tucson, Arizona, U.S., on Friday, Jan. 15, 2021. Cherry Orr | Bloomberg | Getty Images The Centers for Disease Control and Prevention quietly changed its guidance on Covid-19 vaccine shots, saying it’s now OK to mix Pfizer and Moderna‘s shots in “exceptional situations” and that it’s also fine to wait up to six weeks to get the second shot of either company’s two-dose immunization. While Pfizer and Moderna’s vaccines, which both use messenger RNA technology, were authorized…
Read MoreCDC quietly changes Covid vaccine guidance to OK mixing Pfizer and Moderna shots in ‘exceptional situations’
