You may qualify for this study if you are age 65 and older and have never received a pneumococcal (pneumonia) vaccine. Ideal candidates for participation will need to be in good general health, weigh at least 110 pounds, and are eligible to receive the clinically recommended pneumococcal vaccines. This study will help us better understand human immune responses after receiving FDA-approved Prevnar and Pneumovax pneumococcal vaccines. Compensation will be provided after qualified participants are enrolled. Spaces are limited. Please call 205-996-4099 for more information.