According to a report by All Area Codes, the week beginning March 8th, when the WHO declared a global pandemic and the US issued a national emergency, complaints to the FTC for Do-Not-Call Registry violations drop 15% compared to the previous week.
The week beginning March 15th saw an even deeper drop of 23% from the beginning of the month.
Complaints continue to drop as the week beginning March 22nd sees a 56% reduction.
https://www.allareacodes.com/coronavirus/