A simple cough in a child can turn into a scary hospital visit within a day. And a “mild” fever in a senior can suddenly become breathlessness and...

Key TakeawaysPneumonia can be viral or bacterial, and the cause guides treatment.Viral pneumonia develops gradually and is usually milder.Bacterial pneumonia...

Pneumococcal infections are a major cause of severe respiratory illness, especially in infants, older adults, and individuals with weakened immune systems....