Why the study?
Does the Salk vaccine prevent paralytic poliomyelitis in a tropical environment?
Population
Population in Puerto Rico during the 1960 poliomyelitis epidemic, including 495 paralytic cases…
Comparison
Salk vaccine (three or more doses) vs Unvaccinated or fewer than three doses
Design
Cohort
Authors
Loading...
Supports Salk vaccine in tropical outbreaks; leaves open need for randomized confirmation before changing practice.
Does the Salk vaccine prevent paralytic poliomyelitis in a tropical environment?
The Salk vaccine was highly effective (82% for ≥3 doses) in preventing paralytic poliomyelitis during a severe tropical epidemic.
Timothee et al. (1963) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: