The latest from Dennis van Engelsdorp, et al

Of the 61 variables quantified (including adult
bee physiology, pathogen loads, and pesticide levels), no single factor
was found with enough consistency to suggest one causal agent.

we cannot make any definitive statement
concerning which factors do or do not contribute to or cause CCD.

we suspect that while pathogen infection may cause the
symptoms of collapse, these infections are secondary and are the result of
some other factor or combination of factors that reduce the bees’ ability
to mitigate infection.

-- 
from:
www.plosone.org
Colony Collapse Disorder: A Descriptive Study
PLoS ONE | 1 August 2009

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