Dengue & Chikungunya — Practice
In a sentinel surveillance system for dengue, weekly reported case counts are plotted and a threshold is set at the mean plus two standard deviations of the preceding three years' counts for that week. Crossing this threshold is intended to trigger which public health action?
ADeclaration of elimination
BEarly warning of an impending epidemic
CEstimation of the herd immunity threshold
DCalculation of the secondary attack rate