RAD51 and parasitic infectious disease: To determine whether detection of B. burgdorferi will be affected by the presence of higher levels of bacteremia and parasitemia due to A. phagocytophilum and B. microti, respectively, we mixed genomic DNA of all three pathogens such that the copy number of BmTPK and APH1387 was 100-fold higher than that of the recA copies of B. burgdorferi.