OK, last time I thought H1N1 influenza was coming back (just after Christmas) it turned out to be just a blip.  But I notice that according to Google Flu Trends, 30 states are showing increases in flu activity this week, compared to last week. Mostly very small increases,1 but 10 of the states have shown a sustained increase (at least two weeks of increasing numbers). Over the past two weeks, Alabama, Kansas, Louisiana, Oregon, and Utah have each shown a 10-20% increase in flu activity.

This is pretty much the time that flu season normally begins, but there’s been very little evidence of the normal seasonal flu strains circulating this year, so odds are these cases are almost all H1N1 swine-origin influenza virus.

Just saying.

  1. None are more than about 10% higher than last week[]