Surveillance & Outbreak Investigation

Summary

Develops public health surveillance through Langmuir's closes-the-loop definition and the four system types of passive, active, sentinel, and syndromic, walking through Canadian products including CNDSS, FluWatch, RVDSS, CCDSS, BCCDC dashboards, the BC Coroners Service, and CIHI holdings. Covers the CDC's nine surveillance evaluation attributes and the inverse relationship between sensitivity and predictive value positive in syndromic systems. Pivots to outbreak investigation with definitions of cluster, outbreak, epidemic, and pandemic, a structured ten-step CDC investigation framework, attack rates, and a worked salmonella case study using PulseNet sequencing.