A case of myocarditis mimicking acute coronary syndrome associated with H1N1 influenza A virus infection

After reading the case reported by Sahin and Cols., screening for Influenza A infection in an patient with respiratory syndrome and acute chest pain, showed us a Parainfluenza 4 infection associated to myopericarditis. This patient presented a sudden-onset of chest pain mimicking acute coronary syndrome following a history of flu-like symptoms. By date, it has not been related Parainfluenza 4 infection to myopericarditis but, it should be suspected when respiratory syndrome is present. Even antiviral treatment is not approved, good medical condition at discharge was achieved with antiinflamatory therapy.