There are now two pneumonia vaccines for adults, the well-established PCV-23 (known as Pneumovax) and PCV-13 (known as Prevnar). The second vaccine has been used in children for years, but only recently has been recommended for general use in adults. Used together, they help protect you from a number of the most common strains of pneumonia.
The new recommendation is for adults over age 65 who have not previously received a pneumococcal vaccine should receive one dose of PCV-13. Then PCV-23 should be given six to twelve months later.
If you have already received the PCV-23 vaccine, then you should receive one dose of PCV-13 one year after the PCV-23 administration date.
–Dr. Roger M. Thompson M.D.