The first days of Pfizer Inc’s Covid-19 vaccine rollout have seen unexpected hitches including some vaccines being stored at excessively cold temperatures and Pfizer reporting potential challenges in its vaccine production, US officials said on a Wednesday press call. At least two trays of Covid-19 vaccine doses delivered in California needed to be replaced after their storage temperatures dipped below …
Read More »Some vaccine doses kept too cold, Pfizer having manufacturing issues: US officials
December 17, 2020