PCV13-Type Pneumonia Persists Despite Vaccination Programs Nearly 20 years ago, the 13-valent pneumococcal conjugate vaccine (PCV13) was introduced into the infant vaccination schedule in the United States. However, a new study has found that despite the herd protection observed in U.S. adults, a persistent burden of PCV13-type community-acquired pneumonia remains in that population. Here is what researchers found out. |