which year is the last period of vaccination #Vaccination

A. Babies need four doses, at 2 months, 4 months, 6 months, and between 12 and 15 months. Pneumococcal vaccine protects against Streptococcus pneumoniae, which causes meningitis, pneumonia, and some ear infections. It's also a four-dose series, coming at 2 months, 4 months, 6 months, and 12 to 15 months.