New Delhi : Ministry of Health issues detailed SOPs for identification & delineation of Containment & Buffer zones.
A containment operation (large outbreak or cluster) is deemed successful when no case is reported in last 28 days from containment zone — MoHFW.
Union Health Ministry asks States/UTs to categorise districts/municipal corporations/sub division or any other admin unit as red/orange/green by taking a multi-factorial analysis based on the combination of parameters highlighted below.