Table 1. Summary of the genetic survey conducted on Wuchereria bancrofti microfilariae from Burkina Faso of genetic changes at the β-tubulin locus associated with benzimidazole resistance (in nematodes of ruminants).

Village	No. hosts sampled	Mean no. of microfilariae genotyped per host (range)	Mean microfilaraemia per 20 µl blood (range)	Sample (microfilarial) resistance allele frequency,	Sample and [expected] heterozygosity
Untreated villages
TANGONKO	16	9.6 (1, 15)	323 (162, 703)	0.28	0.20 [0.40]
BADONGO	14	6.6 (1, 10)	212 (60, 845)	0.23	0.24 [0.35]
Village that had received one round of chemotherapy (albendazole+ivermectin)
PERIGBAN	13	8.5 (3, 12)	35 (18, 86)	0.62	0.27 [0.47]

Results were presented by Schwab et al. [13]. The range of microfilarial samples obtained per host is given in brackets. The expected microfilariae heterozygosity according to the Hardy-Weinberg equilibrium is given in square brackets.