The authors of a clinical study of a 20-year-old Australian man with symptoms of myocarditis that developed after his second dose of an mRNA COVID-19 vaccine have concluded that mRNA vaccines are still “overwhelmingly favourable for all age and sex groups, including young people.” The research team, led by Joshua Wong from the Royal Melbourne Hospital, examined the patient who presented to the hospital with chest pain, fever, and sweats after his second dose of the Pfizer COVID-19 vaccine. Reportedly, 12 hours after receiving the second dose, the patient started experiencing symptoms of headaches, night sweats, and chills and developed chest pain 48 hours later even though he was fine after his first dose 23 days prior. The patient had no history of myocarditis, however, an ultrasound of the heart showed a decrease in function of the left ventricles generally associated with myocarditis, suggestive of possible vaccine-induced myocarditis. Wong and his colleagues …