Comparison of patient characteristics and clinical outcomes of post-viral pneumococcal pneumonia and primary pneumococcal pneumonia.

*Patients who are immunocompromised due to either medications or immune disorders including human immunodeficiency syndrome.†Patients who have asthma, chronic obstructive pulmonary disease, or bronchiectasis.‡Patients who have heart failure, cardiomyopathy, or anther chronic condition affecting cardiac function.§Patients who have either chronic hepatitis or cirrhosis; chronic hepatitis was defined as an elevation of serum transaminases above 1.5 times of upper normal limit for longer than 6 months, and cirrhosis was defined by the presence of biochemical and radiological findings consistent with cirrhosis.¶Patients who have either nephrotic syndrome or chronic renal failure.IQR, interquartile range.