Health officials say the delay will not affect first-time vaccination appointments and that receiving the second dose a few weeks later than expected will not be detrimental.
Possible issues with the specified lot arose at a community vaccination clinic held in San Diego where up to 10 individuals required medical attention after experiencing a possible severe allergic reaction during the standard observation period.
It was not clear which other locations received the affected doses.
According to Winiger none of the people vaccinated showed any such symptoms.
The Health Department's statement didn't say how many people have already been vaccinated with doses from this batch.
No recipients reported adverse reactions, according to county health officials.
Below are the statements from both organizations.
Add to that the story of 23 frail and elderly patients in Norway who died after receiving the Pfizer vaccine, pointing to the possibility that adverse reactions to the vaccine can be more serious for those in frail condition. Out of an abundance of caution, we are reaching out to those patients to check on their well-being. More than 300,000 doses from this lot were distributed across the state and a very small percentage have experienced complications. "Obviously the goal for all of us is keeping people safe", Dr. Hoffman said.
The California Department of Public Health has opened an investigation into one lot of a COVID vaccine from Moderna after it possibly caused several severe allergic reactions. Dr. Pan states no other batches have been identified with increased reactions. All of the incidents appear to have occurred at a single community clinic that was administering the lot.
Sunday night's announcement renders 330,000 doses distributed to 287 clinics unusable.
California, with a population of 40 million, has received about 3.5 million vaccine doses and has only administered about a third of them, according to the CDC. No adverse reactions occurred. "Tuolumne County Public Health has received some of this lot number and it has been put aside and will not be used at this time". Other Moderna lots are still in use. It is up to those healthcare entities to administer, track and report all vaccine data to the state.
However, "this lowers the number of available vaccines in our county and may delay vaccine distribution".
A vial of the Moderna COVID-19 vaccine is seen at a local clinic as the spread of the coronavirus disease continues in Aschaffenburg, Germany, January 15, 2021.