Ask HN: Seasonal influenza lower than usual this time of year

Those of you who are good with numbers, can you help describe this data[0] set? It seems that the flu's five-year average is 15.80%, while this year its at 0.10%. Seasonal influenza activity, in the United States, remains lower than usual for this time of year.

Last week, 36 positive flu tests reported. Last year, 7,703 positive flu tests, same week reporting.

Interesting, no?

[0] https://www.cdc.gov/flu/weekly/