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Color coding of areas
April 18 , 2020
1603 days
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- The Colour coding of the country (such as Red, Orange, and Green) was done by the Ministry of Health and Family welfare to help for the management of COVID-19 pandemic effectively.
- It has decided to divide all districts across the country into hotspots (Red Zone), non-hotspots (white zone/orange zone) and green zones.
- It has identified 170 hotspot districts (Red Zone), 207 non-hotspot districts (White Zone) and 353 other districts (green zone) across the country.
- Districts witnessing high number of cases or high growth rate of infections are being marked as hotspots; districts where some cases have been found as non-hotspots; and those which have reported no cases as green zones.
- The Red Zone districts have been further classified as areas with large outbreaks or with cluster outbreaks.
- Tamil Nadu, with 22 of its 27 districts, is the state with the highest number of districts designated as hotspots in the country.
- It is followed by Maharashtra with 14, Uttar Pradesh with 13, Rajasthan with 12, Andhra Pradesh with 11, Delhi with 10.
- These numbers will increase or decrease based on fresh cases of novel coronavirus infection on a weekly basis.
- The health ministry used two criteria to classify the districts as hotspots — the absolute number of cases and the speed of growth in cases.
- The hotspots are those districts where large number of COVID-19 case are being laregly reported and the reported cases are growing day by day.
- Non-hotspots are those districts where the large number of COVID-19 cases and there are no new cases.
- The green zones are those districts where there are limited or no COVID-19 cases.
- If no new case is reported from a Red Zone district in 14 days, it would be moved to the Orange Zone and if no new cases are recorded in 28 days, it will be shifted to the Green Zone.
- The technical definition followed to classify the districts is any district reporting more than six cases would be classified as hotspot district or red zone.
- Any hotspot district with more than 15 cases would be treated as a district witnessing outbreak.
- The Hotspots are to be given the highest priority.
Hotspot criteria
- Highest caseload contributing to over 80% cases in India or
- Districts contributing to 80% cases for each state or
- Districts with a doubling rate in less than 4 days
- For green zones: No new confirmed cases for the last 28 days
Definitions of zones
- A zone with positive cases or a cluster with positive cases is marked as the epicentre of the containment zone.
- A buffer zone is marked where people with severe and acute respiratory illnesses (SARI) are checked and monitored.
- Containment zones are created to map the local transmission of the disease and prevent the contagion from spreading.
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