I just ran across this video from a few years ago.  I realize the current
wisdom is that Varroa feed on fat bodies and that they are a virus vector,
but that still doesn't negate the possibility that they are also
transmitting bacteria which can infect and destroy hemocytes.

Has anything else developed from this line of research?  I cannot find
anything more recent than 2017.

https://www.youtube.com/watch?v=RoSi5v9rtWo

Jim Burritt, University of Wisconsin-Stout The research, with student
co-authors Anna Winfield, of Bloomer, and Jake Hildebrand, of Menomonie,
was published Dec. 21 in PLOS One, a peer-reviewed, open-access, online
publication for science and medicine research. The study, “Sepsis and
Hemocyte Loss in Honey Bees,” can be found online.
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0167752
I'm Oh-for-Two in my first year of beekeeping.  Both hives dropped to
small, unsustainable size (50-60 bees clustered around queen) and died
before winter.
Mite levels were OK until mid-July and then I let down my guard after one
treatment with a thymol-impregnated entranceway.

Thanks!

George Luft
Trumbull, CT

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