What is also interesting is the period with zero flu cases reported Wait, in the US or world-wide? When did that happen? No matches for flu on the submitted

What is also interesting is the period with zero flu cases reported Wait, in the US or world-wide? When did that happen? No matches for flu on the submitted page… I can recall - it was reported in the news - flu cases in the US dropping dramatically. When did we have no flu at all?