Streptococcal pneumoniae presents at
→ Streptococcus pneumoniae is the leading cause of pneumonia, both lobar and bronchopneumonia.
→ Pneumonia is common at the extreme of ages:

Children (especially >5 years of age)
Elderly (>60 - 65 years)

→ Serotypes 6, 14, 18, 19 and 23 are responsible for most cases of pneumonia in children, while serotypes 1, 3, 4, 7, 8 and 12 cause pneumonia in adults.
<5 years
5-15 years
20-25 years
30-40 years