Allergic reactions that caused California to stop 330,000 doses of vaccine have occurred at Petco Park in San Diego

The “higher than usual” number of allergic reactions that prompted California health officials to suspend use of a batch of Moderna vaccines on Sunday occurred at a mass vaccination clinic in Petco Park in San Diego, the state confirmed on Monday.

The California Department of Public Health issued a statement on Sunday recommending that healthcare providers stop using the vaccines from the batch, or batch, that arrived in California between January 5 and January 12. Over 330,000 doses of this batch have been shipped to 287 vendors across the state.

It is not known what other locations have received vaccines from this batch, how many doses were administered, and how the suspension of use of this batch will impact vaccinations statewide. No other cluster of allergic reactions have been reported from other sites using vaccines from the same batch, the state said on Sunday.

Some health care providers in Alameda County have received doses of this batch, and public health officials are ensuring that these doses are stopped, the county said On Monday. No vendor has reported unusual reactions to public health officials, the county said.

There have been less than 10 allergic reactions reported at Petco Park, which opened a mass drive-thru vaccination site last week. All cases occurred within 24 hours and required medical attention.

The state did not immediately provide more details on the case. But last week, a San Diego County public health official said six health workers vaccinated at Petco Park had apparent allergic reactions, according to the LA Times.

“That number, taken together, was slightly higher than expected for the period,” said Dr. Eric McDonald, San Diego County director of epidemiology. He said the lot had been traded “in the event that” reactions were related, The Times reported.

Allergic reactions appeared to occur during the required observation period after receiving the vaccine. Due to early reports of a small number of people with severe allergic reactions, regulators recommend that people who receive the vaccine be observed for 30 minutes afterwards.

Moderna said on Monday he was cooperating with the state’s health department to investigate the reported reactions. The company said it was not aware of comparable adverse events from other vaccination sites that may have administered doses of the same batch.

Moderna acknowledges having received a report from the California Department of Public Health that a number of people at a vaccination center were treated for possible allergic reactions after vaccination of a batch of Moderna’s COVID-19 vaccine “, a spokesperson for Moderna said in a written statement on Monday. . “The company is cooperating fully with the CRPD to investigate these reported adverse events.”

The US Centers for Disease Control and Prevention and the Food and Drug Administration are also reviewing the lot.

The state said the risk of a serious adverse reaction is very low. It is not known how many cases of severe allergic reaction have occurred in people after receiving the Moderna vaccine.

For a similar vaccine, made by Pfizer, the risk is less than 1 in 100,000. According to the CDC, 175 cases of possible serious allergic reactions have been identified out of nearly 1.9 million doses administered in the United States as of December 23. .