<unk>  may be performed to document ejection fraction (EF) and any signs of ventricular systolic dysfunction if<unk>  infection has been complicated by systemic involvement of the myocardium.
Diphtheria echocardiography or ultrasound
Diphtheria physical examination
Typhoid fever physical examination
Yellow fever physical examination
Bourbon virus infection physical examination
Avian influenza physical examination
Chickenpox chest x ray
Middle East respiratory syndrome coronavirus infection physical examination