Question: what is the difference between pneumonia vaccine 13 and 23?
Answer: The main difference between Pneumovax 23 and Prevnar 13 is how many different types of bacteria they target. Pneumovax 23 protects against 23 types of pneumococcal bacteria and is used in adults, while Prevnar 13 protects against 13 types of pneumococcal bacteria, and was designed primarily for children.