The Oregon Health Authority said on Wednesday that it will not delay administering the Moderna vaccine after their counterparts in California opted to pause distribution of a batch of the same vaccine over allergy concerns.
In the USA where Pfizer and Moderna vaccines are being distributed, health officials say the vaccines are not interchangeable.
Erica Pan, MD, said the state had temporarily paused the use of one lot of Moderna's vaccine after reports that some employees at a San Diego vaccination center required medical attention after they were vaccinated, Moderna said in a statement.
The CDC warns that locations administering COVID-19 vaccines should take necessary precautions against severe allergic reactions. Since the Pfizer and AstraZeneca vaccines focus on the spike protein that coats the coronavirus, they say a mismatched dose is better than partial protection.
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Health experts found "no scientific basis to continue the pause", Pan added. Vaccines from Pfizer and Moderna passed testing standards set by the Food and Drug Administration with the hope that millions will be distributed across the country in the coming months.
Members of my family who have qualified to receive the vaccine as health care workers or because of their age have already received the COVID-19 vaccine, and I encourage every Californian to get the vaccine when it's their turn. No other allergic reactions were reported, the CDPH said.
KTGV-TV reported that six health care workers had allergic reactions to vaccines at the Petco Park vaccination center on January 14.
"With these 100 million additional doses, the United States will be able to protect more individuals and hopefully end this devastating pandemic more quickly", Albert Bourla said.
"The intent is not to suggest people do anything different, but provide clinicians with flexibility for exceptional circumstances", Jason McDonald, a spokesman for the CDC, said on Friday in an email to CNBC.