<prompt> Streptococcal pneumoniae pneumonia present at -5 years5 -15 years20 - 25 years30 - 40 years  <response>: Ans. is a i.e., 5 years o Streptococcus pneumoniae is the leading cause of pneumonia, both lobar and bronchopneumoniao Pneumonia is common at the extereme of ages :Children especially 5 years of ageElderly 60-65yearso 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. 