Measuring protection
Revision as of 20:05, 26 March 2023 by Bosmana fem (talk | contribs)
Measuring protection: efficacy versus effectiveness. An efficacy study in a vaccine's clinical development asks, "Does the vaccine work?"
In contrast, an effectiveness study, usually retrospectively as a case-control or cohort study, asks the question "Does vaccination help people?".
Ref: http://www.ncbi.nlm.nih.gov/pubmed/9855432
Root > Introduction to Public Health and basic concepts > Public Health Interventions > Prevention > Vaccination