If flu stats are significantly down, it may be because the COVID-19 test also detects the flu. A positive result of this test is more than likely recorded as COVID-19 when the person actually has the flu.
Source:
- November 12, 2020. “New Cutting-Edge Rapid Test Detects Both COVID-19 and Flu.” UC Davis Health.
https://health.ucdavis.edu/health-news/newsroom/new-cutting-edge-rapid-test-detects-both-covid-19-and-flu/2020/11.
University.