Tsetse fly induced humoral responses in pigs.

Follow-up of the anti-G. m. morsitans saliva IgG responses (A) and the anti-rTsal1 IgG responses (B) in pigs exposed to 2 different tsetse fly biting intensities (two-weekly exposure for 6 weeks to 3 flies (low exposure group, n = 4) or weekly exposure for 7 weeks to 30 flies (high exposure group, n = 5)). One non-exposed animal was included as a negative control. Arrows indicate the tsetse exposure regimen for the low exposure (red arrows) and high exposure group (red and black arrows). Presented data are the mean ΔO.D.450 nm values and the 95% CI obtained with a 1∶1600 dilution of the individual plasmas.