The initial days of Pfizer’s Covid-19 vaccine rollout have faced 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 press call, Wednesday.
Approximately, two trays of Covid-19 vaccine doses delivered in California needed to be replaced after their storage temperatures dipped below minus 80 Celsius, US Army General Gustave Perna explained.
Officials are investigating whether storing the vaccines at excessively cold temperatures poses a safety or efficacy risk, General said.
Pfizer also has reported some production issues, US Secretary of Health and Human Services Alex Azar said.
“We will ensure that by whatever mechanism, that we provide them full support to ensure that they can produce for the American people,” said Alex.
