This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Microbiology
The 23 valent pneumococcal vaccine is recommended in all except - 
Select and explain. 
A. CSF leak, B. Chronic cardiac disease, C. Children less than 2 years, D. Nephrotic syndrome
C: Children less than 2 years
Answer: C: Children less than 2 years 
Explanation: None