French health authorities advised against use of the Moderna Covid vaccine for people under 30 late yesterday, after a nationwide study confirmed a slight risk of cardiac inflammation associated with mRNA vaccines.
The study from Epi-Phare, an independent medicines safety research group that works closely with the French government, confirmed previous findings - while noting cases are rare and do not cast doubt on the effectiveness of the shots.
It looked at all people in France aged 12 to 50 who were hospitalised for myocarditis (inflammation of the heart muscle) or pericarditis (inflammation of the tissue surrounding the heart) between 15 May and 31 August of this year.