Pertussis cases in Pennsylvania on increase
Pa Med
.
1983 Mar;86(3):16.
Author
R D Gens
PMID:
6682952
No abstract available
MeSH terms
Child
Child, Preschool
Humans
Infant
Pennsylvania
Pertussis Vaccine
Whooping Cough / epidemiology*
Whooping Cough / prevention & control
Substances
Pertussis Vaccine