1954 Poliomyelitis vaccine field trial; plan, field operations, and follow-up observations.
D005500:Follow-Up Studies; D019150:Neuroaxonal Dystrophies; D010347:Patient Care Planning; D011051:Poliomyelitis / Q000635:transmission*; D014611:Vaccination; D014612:Vaccines
D014612:Vaccines
POLIOMYELITIS/transmission; VACCINES AND VACCINATION