Poliomyelitis--Prevention | 4 |
Poliomyelitis--Vaccination--North Carolina--Greenville | 2 |
Public health--North Carolina--Pitt County | 2 |
Vaccines | 2 |
Vaccines--North Carolina--Greenville | 2 |
Irons, Malene Grant, 1915-2008 | 1 |
Public health--North Carolina | 1 |
Public health--North Carolina--Greenville | 1 |