Pneumococcal Disease

How do I know they're safe? Is it possible to get the disease from the vaccines?

Vaccines are tested very thoroughly in clinical trials before they are approved. In addition, the Vaccine Adverse Event Reporting System (VAERS), a national vaccine safety surveillance program sponsored by the CDC and FDA, continually monitors the safety of vaccines over many years. Both types of pneumococcal vaccine used in the US have been tested extensively and administered safely to many millions of people in the US.