Question

What is the most common cause of bacterial pneumonia in school-aged children?

1) Streptococcus pneumoniae
2) Haemophilus influenzae
3) Mycoplasma pneumoniae
4) Chlamydophila pneumoniae

Answer 1

The most common cause of bacterial pneumonia in school-aged children is 1) Streptococcus pneumoniae. =

Step-by-step explanation:

This bacterium is commonly found as part of the normal microbiota of the human respiratory tract. It colonizes the bronchioles of the lungs and eventually spreads to the alveoli where its polysaccharide capsule interferes with phagocytic clearance. Streptococcus pneumoniae is the most common cause of pneumonia in school-aged children due to its ability to cause inflammation and fill the alveoli with exudate.

Therefore streptococcus pneumoniae is the most common cause of bacterial pneumonia in school-aged children. It colonizes the bronchioles of the lungs and spreads to the alveoli, causing inflammation and filling them with exudate. The correct answer is 1) Streptococcus pneumoniae.