According to Apptopia:
March 23: 2.13 million downloads
March 22: 2.04 million downloads
Two months prior (late January); 56,000 downloads
That’s 38x more downloads per day since January. I don’t have the data, but it’s possible that in late January, 56,000 per day represented a significant increase from late 2019, due to virus activity in China and elsewhere.
Source: Article from CNN business