A fast-frequency measure based on an all-India sample often faces challenges in execution that cannot be overcome in the finite time span available to cover disruptions caused by externalities. For example, if a region is hit by a severe natural calamity that disrupts the execution of a survey for more than a week, then it is not possible to generate a near-realtime weekly estimate for that region.
In the recent past we faced several challenges in execution of the survey. The worst caused by a natural calamity was in Kerala during the 2018 floods. There were challenges in the state
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