Moderna said Tuesday that it is investigating reported allergic reactions from a batch of its COVID-19 vaccine after California recommended the vaccinations be interrupted.
State epidemiologist Erica Pan recommended on Sundays that health care providers are pausing doses of lot 041L20A, while the state is investigating a “higher than normal rate of possible allergic reactions” reported with doses administered at a local vaccination clinic.
Pan said at the time that California, Moderna, the Food and Drug Administration (FDA), and the Centers for Disease Control and Prevention (CDC) are all investigating.
In a statement on TuesdayModerna said it “acknowledges having received a report from the California Department of Public Health (CDPH) that several individuals were being treated at a vaccination center in San Diego for possible post-vaccination allergic reactions” from the party.
The company said it is not aware of “similar clusters” of side effects from other vaccination centers that may have administered doses from the same lots.
“This research is ongoing and Moderna is working closely with the FDA and CDC to understand the clinical cases and whether the broad pause in using the batch is warranted,” the company said.
The company did not specify exactly how many people reported side effects on Sunday. However, The Associated Press previously reported that six health workers in San Diego had allergic reactions to vaccines they received at a vaccination center on Thursday.
The Hill has contacted the FDA and CDC for comment.
A total of 1,272,000 doses were produced in the batch, of which 964,900 have already been distributed across 37 states, Moderna said. The CDPH said it received 330,000 doses of the batch that were distributed to 287 providers.