Aedes aegypti larval indices and risk for dengue epidemics

We assessed in a case-control study the test-validity of Aedes larval indices for the 2000 Havana outbreak. "Cases" were blocks where a dengue fever patient lived during the outbreak. "Controls" were randomly sampled blocks. Before, during, and after the epidemic, we calculated B...

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Bibliographic Details
Published in:Emerging infectious diseases 2006-05, Vol.12 (5), p.800-806
Main Authors: Sanchez, Lizet, Vanlerberghe, Veerle, Alfonso, Lázara, Marquetti, Maria del Carmen, Guzman, Maria Guadalupe, Bisset, Juan, van der Stuyft, Patrick
Format: Article
Language:English
Subjects:
Aedes
Aedes - virology
Aedes aegypti control
Aedes albopictus
Animals
Area Under Curve
Case-Control Studies
Cuba
Cuba - epidemiology
Dengue
Dengue - epidemiology
Dengue - transmission
Dengue Virus - pathogenicity
Disease Outbreaks
Disease transmission
Humans
Insect Vectors - virology
Larva - virology
Larvae
larval indices
Predictive Value of Tests
Prevention
Risk Factors
ROC Curve
Sensitivity and Specificity
surveillance
transmission risk
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Summary:We assessed in a case-control study the test-validity of Aedes larval indices for the 2000 Havana outbreak. "Cases" were blocks where a dengue fever patient lived during the outbreak. "Controls" were randomly sampled blocks. Before, during, and after the epidemic, we calculated Breteau index (BI) and house index at the area, neighborhood, and block level. We constructed receiver operating characteristic (ROC) curves to determine their performance as predictors of dengue transmission. We observed a pronounced effect of the level of measurement. The BI(max) (maximum block BI in a radius of 100 m) at 2-month intervals had an area under the ROC curve of 71%. At a cutoff of 4.0, it significantly (odds ratio 6.00, p
ISSN:1080-6040
1080-6059
DOI:10.3201/eid1205.050866