French health authority: People under 30 should get Pfizer vaccine instead of Moderna

France's public health authority advised that people under 30 should receive Pfizer's COVID-19 vaccine instead of Moderna's when possible. 

The French National Authority for Health (HAS) said the Moderna vaccine carried a higher risk for heart issues, according to Reuters. Specifically, it cited "very rare" risks related to a heart disease called myocarditis that appeared in recent data on the Moderna vaccine and in a study published Monday. 

"Within the population aged under 30, this risk appears to be around five times lesser with Pfizer's Comirnaty jab compared to Moderna's Spikevax jab," HAS said on Monday, per Reuters.

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However, HAS recommended the Moderna vaccine for people over 30, adding that it was slightly superior to Pfizer's in effectiveness, the news service reported.

Other countries have also raised concerns about Moderna's risk for heart problems among younger people. Last month, Sweden said that it would stop giving Moderna’s vaccine to those born in 1991 or later, while Denmark halted its distribution of the vaccine to anyone under the age of 18.

The European Medicines Agency (EMA), the European Union's top drug regulator, approved booster shots of Moderna's vaccine last month for anyone over age 18, and at least six months after their second dose, Reuters added.

Earlier this year, the E.U. agency said it found a possible connection between the rare heart condition and both the Pfizer and Moderna vaccines. The EMA added that the shots still come with far more benefits than risks, Reuters also reported. 

The Hill has reached out to Moderna for comment.