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Speed versus coverage trade off in targeted interventions during an outbreak.
Axel A Bonačić Marinović1, Marion Koopmans2, Sabine Dittrich3
1Centre for Infectious Disease Control, National Institute for Public Health and the Environment, Bilthoven, The Netherlands; Julius Centre for Health Sciences & Primary Care, University Medical Centre Utrecht, The Netherlands.
Epidemics
|September 22, 2014
Summary
Early epidemic control measures are crucial for preventing disease spread. This study shows that rapid diagnostic tests, despite lower sensitivity, can be as effective as slower PCR tests when balancing speed and coverage.
Area of Science:
- Epidemiology
- Infectious Disease Modeling
- Public Health Interventions
Background:
- Timely application of case-based interventions is critical during epidemic outbreaks.
- A trade-off exists between the speed of intervention implementation and its diagnostic accuracy/coverage.
Purpose of the Study:
- To analyze the trade-off between speed and coverage in epidemic control measures.
- To compare the effectiveness of rapid influenza diagnostic tests (RIDTs) versus PCR-based interventions for H1N1.
- To evaluate how diagnostic test sensitivity impacts outbreak size.
Main Methods:
- Utilized stochastic models to simulate intervention impacts on individual reproduction density.
- Modeled case-based interventions using data from the Netherlands H1N1 pandemic.
- Compared interventions based on RIDTs with varying sensitivities against PCR-based strategies.
Main Results:
- Interventions using bedside RIDTs (60% sensitivity) or lab RIDTs (70% sensitivity) were as effective as PCR-based interventions.
- Intervention performance depended on individual reproduction density and delay periods, not solely on the basic reproduction number (R0).
Conclusions:
- Rapid diagnostic tests can be effective for epidemic control when considering the speed-coverage trade-off.
- Optimizing intervention strategies requires understanding disease transmission dynamics and diagnostic test characteristics.
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