Gap between COVID-19 shots may be stretched past recommended range in some cases: U.S. CDC AOLCDC quietly changes Covid vaccine guidance to OK mixing Pfizer and Moderna shots in 'exceptional situations' CNBCLocal Healthcare Worker Struggling To Get Second Dose Of COVID-19 Vaccine CBS Los AngelesMaine CDC reports 643 new COVID-19 cases, 4 deaths WABICDC: Moderna COVID-19 vaccine allergic reactions very rare - Business Insider Business InsiderView Full Coverage on Google News