New extremely rare side effect added to official list for two Covid jabs Anyone who experiences chest pain, shortness of breath or a fluttering heart after getting a jab has been urged to seek medical attention Benefits of mRNA COVID vaccines outweigh rare heart risks, says WHOThe benefits of mRNA COVID-19 vaccines outweigh the very small risk they might cause heart inflammation, as the jabs reduce hospitalisations and deaths, an advisory panel of the World Health Organization said on Friday. COVID-19: Moderna and Pfizer coronavirus vaccines linked to mild heart inflammation but benefits still outweigh risksBoth the Pfizer/BioNTech and Moderna COVID vaccines have been linked to cases of myocarditis and pericarditis - swelling of or near the heart - in a limited number of cases, usually in men aged under 40 after their second dose. Regulators say benefits sti ‘Typically mild’ and extremely rare conditions added to Covid jab side effects list‘Vast majority recovered with simple treatment and rest,’ medicines regulator says Heart inflammation link to Pfizer and Moderna jabsBut European regulators say the benefits of Covid vaccines continue to far outweigh the risks. Heart inflammation link to Pfizer and Moderna jabsBut European regulators say the benefits of Covid vaccines continue to far outweigh the risks. EU health body: mRNA COVID-19 vaccines possibly linked to 'very rare' cases of heart inflammationA committee of the European Medicines Agency (EMA) determined that the mRNA COVID-19 vaccines could possibly be linked to “very rare” cases of heart inflammation among vaccine recipients. EU regulator finds link between heart inflammation and mRNA COVID vaccinesEurope's drug regulator has found a possible link between rare heart inflammation and COVID-19 vaccines from Pfizer (PFE.N) and Moderna (MRNA.O), and advised people with a history of a rare blood disorder to avoid getting J&J's coronavirus shot.