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....

What if that stubborn cough isn’t just a seasonal flu? Ever wondered if pneumonia can actually spread from one person to another? You’re not alone....