The Centers for Disease Control and Prevention's vaccine safety group is investigating reports that a 'small number' of teens and young adults who have been vaccinated against coronavirus have experienced heart problems days after receiving their second jab. The cases seem appear to be be occurring mainly in adolescents and young adults around four days after their second dose. Guidance has been posted on its website for doctors to be on the alert for the heart symptoms which are unusual among young people. The agency's vaccine safety group decided to communicate the information to vaccine providers out of an abundance of caution. U.S. regulators last week authorized Pfizer's COVID-19 vaccine for use in children as young as 12.
