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Number and Timing of Doses The primary series of PCV15 or PCV20 consists of 3 doses routinely given at 2, 4, and 6 months of age. You can administer the first dose as early as 6 weeks of age. CDC recommends a fourth (booster) dose at 12 through 15 months of age.

By the late 1960s, efforts were again being made to develop a polyvalent pneumococcal vaccine. The first pneumococcal vaccine was licensed for use in the United States in 1977. The first conjugate pneumococcal vaccine was licensed in the United States in 2000.

* This PPSV23 column only refers to adults 19 through 64 years of age. All adults 65 years of age or older should receive one dose of PPSV23 5 or more years after any prior dose of PPSV23, regardless of previous history of vaccination with pneumococcal vaccine.

pneumoniae serotypes contained in the vaccine. The new use for was approved under FDA's accelerated approval pathway, which allows for earlier approval of products that provide meaningful therapeutic benefit over existing treatments for serious and life-threatening illnesses (5).

Routine Vaccination of Infants and Children Give PCV15 or PCV20 to infants as a series of 4 doses, one dose at each of these ages: 2 months, 4 months, 6 months, and 12 through 15 months. Children younger than 5 years of age who miss their shots or start the series later should still get vaccinated.

How many shots will I need? If you get pneumococcal vaccines for the first time at 65 or older, you will need two shots, one year apart. If you've had only one pneumococcal vaccine in your lifetime, you may now need an additional shot.

The PCV20 dose should be given at least 5 years after the last pneumococcal vaccine. Their vaccines are then complete. The second dose of PPSV23 should be given at least 8 weeks after PCV13 and 5 years after PPSV23. No additional pneumococcal vaccines are recommended until at least age 65 years.