What is the most common cause of pneumonia in children 5-15 years of age?

H.INFLUNZA.......STREPT.PNEUMONIA....MYCOPLASMA PNEUMONIA

community aquered pnumonia due to Mycoplasma pneumoniae is the most common cause 

Bacterial pathogens including Streptococcus pneumoniae, Mycoplasma pneumoniae, and Chlamydia pneumoniae become more frequent. In children up to 15 years of age, S pneumoniae accounts for between 17% and 28% of all community-acquired pneumonia cases.

With increasing age, incidence of pneumonia decreases, but bacterial pathogens including Streptococcus pneumoniae is the most common cause

Viral infection _streptococcal microorganism

Community acquired Pneumonia. (Streptococcal Pneumonia)

most common cause of pneumonia in childrens 5 to 15 year of age is h.influenza