Why the study?
Does poliomyelitis vaccination reduce case attack rates in communities?
Population
Communities assessing immunization levels for poliomyelitis
Comparison
Poliomyelitis vaccination (including Salk vaccine) vs Unvaccinated populations
Design
Review
Authors
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Supports lower historical polio attack rates with vaccination; leaves open generalizability to modern vaccines and populations.
Does poliomyelitis vaccination reduce case attack rates in communities?
Community immunization levels can be effectively measured by comparing disease case attack rates between vaccinated and unvaccinated populations.
Charles R. Hayman (1965) studied this question.
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