Translations:Advanced Field Epi:Manual 1 - Disease Control and Eradication Programs/104/en

Reliable and cost-effective tests that have been adequately characterised for sensitivity and specificity are essential for the identification of infected animals and herds or flocks, for appropriate follow-up action. Reliable tests are also required for herd/flock classification and identification of low-risk replacement stock. A good understanding of test sensitivity and specificity and factors that may affect these characteristics is also required for the development of appropriate testing and surveillance strategies.