Wiki Sumber Informasi iSIKHNAS

Trace-forward and trace-back should be used to identify any high risk contacts of movements onto the property in the period before the disease was detected and off the property. Other properties identified through these procedures should be visited and examined to look for any evidence of infection. Knowing the incubation period of the disease, the likely date when the premise was infected and dates of movements onto or off the farm can all be used to identify windows of interest for tracing. If the date when the premise was likely to have been infected can be identified then all movements off the farm from that time up until quarantine is imposed should be checked.