EU adds severe allergies as side effect of Novavax COVID vaccine

Novavax stock fell 20.3% after news of severe side effects

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The European Medicines Agency on Thursday identified severe allergic reactions as a potential side effect of Novavax Inc.'s COVID-19 vaccine.

The vaccine was authorized by U.S. regulators Wednesday, and its product label in the United States warns against administering the shot to people with a history of allergic reactions to any components of the shot. 

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A woman holds a small bottle labeled with a "Coronavirus COVID-19 Vaccine" sticker and a medical syringe in front of a Novavax logo in this Oct. 30, 2020, illustration.

A woman holds a small bottle labeled with a "Coronavirus COVID-19 Vaccine" sticker and a medical syringe in front of a Novavax logo in this Oct. 30, 2020, illustration. (REUTERS/Dado Ruvic/File Photo)

Shares of Novavax fell 20.3% to $55.72 in morning trading, along with the broader market and other COVID-19 vaccine makers. Novavax shares are usually volatile.

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The EMA said it would also update the product information for the vaccine to add unusual or decreased feeling in the skin as a new side effect.

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Only 250,000 doses of Novavax's COVID vaccine, Nuvaxovid, have been administered in Europe so far since its launch in December, according to the European Centre for Disease Prevention and Control.

A health care worker administers a booster dose of a COVID-19 vaccine at a temporary vaccine center in Guatemala City March 1, 2022.

A health care worker administers a booster dose of a COVID-19 vaccine at a temporary vaccine center in Guatemala City March 1, 2022. (AP Photo/Moises Castillo)

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