The numbers are not 0 yet, only that this report shows numbers through 4/11/2020, the rest will be filled in during the rest of April and early May.
You can select which strains of influenza are graphed, I'm wondering if they are even listing this China Flu on the chart. This chart shows the PEAK hit in Jan/Feb before social distancing even really started. It was March 16 for Oregon to recommend the social distancing and closure of businesses. And yet NY cases peaked and were going down??
Curiouser and curiouser...
Source?