Union Health Secretary Preeti Sudan has written to Chief Secretaries of all states and union territories designating Red, Orange and Green zones
The letter said that Ministry is designating various zones under broad criteria since recovery rate is more
She said that the current classification is based on the incidence of cases, doubling rate, the extent of testing, and surveillance feedback.
She furhter requested all states to delineate the containment zones and buffer zones in the identified red zone...
A district will be considered under Green Zone, if there are no confirmed cases so far
In buffer zones, extensive surveillance for cases through monitoring of ILI/SARI cases in health facilities has to be taken up.