Results of the regression analyses.

Regression analyses were performed to compare the overall titres of each of the five viruses measured on bee samples (Virus titres in bees) with either the overall level of infestation by Varroa (Varroa infestation levels) or with the overall titres of each of the five viruses measured on Varroa samples (Virus titres in mites). Regressions were run on Log10 transformed data. R-squared with associated p-values0).