Information about pneumococcal serotype prevalence is not available for most communities. The best available data is from communities in the 10 states that have active pneumococcal surveillance programs through the CDC’s Active Bacterial Core surveillance (ABCs), available at www.cdc.gov/abcs/index.html, as well as similar surveillance systems in Alaska and the Navajo Nation. Your local or state health department is your best source for guidance or additional information.