Final answer:
The pneumococcal vaccinations should begin at 2 months of age for PCV13 and at 2 years of age for PPSV23. PCV13 is given to children under 2 and adults over 65, while PPSV23 is given to adults over 65.
Step-by-step explanation:
The pneumococcal vaccinations should begin at 2 months of age for the pneumococcal conjugate vaccine (PCV13) and at 2 years of age for the pneumococcal polysaccharide vaccine (PPSV23). PCV13 is generally given to children younger than 2 years and adults older than 65 years, while PPSV23 is given to adults 65 years and older.