California Halts Injections of Moderna Covid Vaccine Batch Due to ‘Higher-Than-Usual Number of Adverse Events’
Investigation launched after spike of reactions linked to batch of vaccines
California health officials are asking vaccine providers to stop administering a batch of Moderna’s Covid-19 jab, after an unusually high number of adverse reactions were linked to the drug.
Doses from Moderna Lot 041L20A are suspected of causing a “higher-than-usual number of adverse events” and should be shelved until a proper investigation can be conducted, the California Department of Public Health said on Sunday.
State epidemiologist Dr. Erica S. Pan said in a statement that “fewer than 10 individuals” suffered “a possible severe allergic reaction” and required medical attention over the past 24 hours after being injected with the specific batch of vaccine. All of the incidents appear to have occurred at a single community clinic that was administering the lot. The site reportedly closed for several hours after the string of adverse reactions occurred, before switching to a different batch of the drug.