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4,400 adverse events reported in US after receiving Pfizer-BioNTech vaccine

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Washington, January 7

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Nearly 4,400 adverse events were reported after people received the Pfizer-BioNTech Covid-19 vaccine in the US, with 21 cases determined to be anaphylaxis, according to a report by the Centers for Disease Control and Prevention (CDC).

The US Food and Drug Administration issued an Emergency Use Authorization for Pfizer-BioNTech Covid-19 vaccine on December 11, 2020, administered as two doses separated by 21 days, reports Xinhua news agency.

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As of December 23, 2020, a total of 1,893,360 first doses of Pfizer-BioNTech COVID-19 vaccine had been administered in the US, according to the CDC report.

Reports of 4,393 adverse events had been submitted to the Vaccine Adverse Event Reporting System in the country.

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Among those, 175 case reports were identified for further review as possible cases of severe allergic reaction, including anaphylaxis.

Twenty-one cases were determined to be anaphylaxis, including 17 in persons with a documented history of allergies or allergic reactions, seven of whom had a history of anaphylaxis, according to the CDC.

Anaphylaxis is a life-threatening allergic reaction that does occur rarely after vaccination, with onset typically within minutes to hours, said the CDC.

Locations administering Covid-19 vaccines should adhere to CDC guidance for use of the jabs, including screening recipients for contraindications and precautions, having the necessary supplies available to manage anaphylaxis, implementing the recommended post-vaccination observation periods, and immediately treating suspected cases of anaphylaxis with intramuscular injection of epinephrine, said the CDC.

–IANS

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