New Delhi: Moderna’s Coronavirus vaccine rarely causes severe allergic reactions, a new report by the Centre for Disease Control and Prevention (CDC) has found. It has been further found that out of 4.04 million people who were administered Moderna jab from December 21, 2020 to January 10, 2021, only 10 people developed a life-threatening allergic reaction called anaphylaxis.Also Read - After Cities, Omicron COVID Cases Likely To Go Up In Villages: Experts

Anaphylaxis is a life-threatening allergic reaction that occurs rarely after vaccination, with onset typically within minutes to hours. Also Read - Vice President M Venkaiah Naidu Tests COVID Positive For Second Time

That works out to be around 2.5 cases of anaphylaxis per 1 million people vaccinated, the CDC’s Morbidity and Mortality Weekly Report said. Also Read - Omicron in Community Transmission Stage in India, Dominant Strain in Metro Cities, Confirms Govt Body

It is still not clear what is causing these severe allergies. But, of the 10 cases that developed a serious reaction, nine of them had previously-knwon allergies, LiveScience reported.

These people showed symptoms of vomiting, nausea, wheezing, tongue swelling and rash within minutes of vaccination. All of them were treated with epinephrine; they have recovered now.

Over 1,200 adverse events were reported after receipt of Moderna Covid-19 vaccine as of January 10, with 10 cases determined to be anaphylaxis, according to a report released by the US Centers for Disease Control and Prevention (CDC) on Friday.

The US Food and Drug Administration issued an Emergency Use Authorization for Moderna Covid-19 vaccine on December 18, 2020, administered as 2 doses, 1 month apart to prevent Covid-19, the Xinhua news agency reported.

As of January 10, a reported 40,41,396 first doses of Moderna Covid-19 vaccine had been administered in the US, and reports of 1,266 adverse events after receipt of Moderna Covid-19 vaccine were submitted to the Vaccine Adverse Event Reporting System, according to the CDC.