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Critical response time (time available to implement effective measures for epidemic control): model building and
A L Rivas1, S E Tennenbaum, J P Aparicio
1Department of Biological Statistics and Computational Biology, College of Agriculture and Life Sciences, Cornell University, Ithaca, New York 14853, USA. alr4@cornell.edu
Summary
Estimating critical response time (CRT) helps determine the optimal window for epidemic control interventions. This study found significant regional variations in CRT during the 2001 FMD epidemic in Uruguay.
Area of Science:
- Veterinary epidemiology
- Disease control strategies
- Public health preparedness
Background:
- Epidemic control requires timely implementation of interventions for maximum effectiveness and cost-efficiency.
- The early phase of an epidemic, characterized by linear case growth, is crucial for assessing response times.
Purpose of the Study:
- To estimate the critical response time (CRT) for epidemic control.
- To analyze regional variations in CRT using data from a foot-and-mouth disease (FMD) epidemic.
Main Methods:
- Defined CRT as the interval where epidemic cases remain stationary during linear growth.
- Calculated CRT using data from the 2001 FMD epidemic in Uruguay.
- Assessed regional differences in CRT.
Main Results:
- Significant regional variations in CRT were observed, ranging from 1.4 to 2.7 days.
- The CRT can inform the selection of appropriate control measures based on their implementation time.
Conclusions:
- CRT is a valuable metric for guiding epidemic control decisions, particularly for rapidly spreading diseases like FMD.
- Regionalized decision-making based on CRT can optimize intervention strategies and resource allocation.