Serotype 19A Bacteremic Pneumococcal Pneumonia After 4 Doses of 13-Valent Conjugate Vaccine: A Review of Pneumococcal Conjugate Vaccine Effectiveness.

We report a case of bacteremic pneumococcal pneumonia due to serotype 19A in a child who had received four doses of the 13-valent pneumococcal conjugate vaccine, and review the literature on effectiveness of this vaccine. Pediatricians should be alert to the fact that up-to-date immunization status with pneumococcal vaccine does not preclude illness from invasive disease caused by a vaccine serotype.