Although the official start of winter does not begin for a few weeks, bitter cold air has spread across much of the northern region. The Minnesota and Oregon Tech Teams finished up their sampling at the end of October, so the honey bee samples received this month were all from the California team (where they are experiencing 60-70°F weather).
We examined 220 California samples for Varroa and 236 for Nosema. The average value for Varroa was 0.71 mites per 100 bees, and the average value for Nosema was 0.30 millions of spores per bee. Remarkably, these averages are almost exactly the same as the averages for California last month. However, our current disease levels are much lower than they were last year in November 2013.