a longitudinal study of sero-conversion to tick-borne pathogens in smallholder dairy youngstock in tanzania.a longitudinal study of sero-conversion of youngstock to the tick-borne pathogens theileria parva, t. mutans, anaplasma marginale, babesia bigemina and b. bovis was conducted over two years on smallholder dairy farms in tanga region, tanzania. there was evidence of maternal antibodies to all tick-borne pathogens in animals less than 18 weeks of age. seroprevalence increased as expected with age in animals older than this but seroprevalence profiles underestimated the force of infection due to wa ...200515936149
spatial and management factors associated with exposure of smallholder dairy cattle in tanzania to tick-borne pathogens.a cross-sectional study of serum antibody responses of cattle to tick-borne pathogens (theileria parva, theileria mutans,anaplasma marginale, babesia bigemina and babesia bovis) was conducted on smallholder dairy farms in tanga and iringa regions of tanzania. seroprevalence was highest for t. parva (48% in iringa and 23% in tanga) and b. bigemina (43% in iringa and 27% in tanga) and lowest for b. bovis (12% in iringa and 6% in tanga). we use spatial and non-spatial models, fitted using classical ...200516023121
factors influencing the distribution of questing ticks and the prevalence estimation of t. parva infection in brown ear ticks in the tanga region, tanzania.questing ticks from various districts and agro-ecological zones (aez) in the tanga region of tanzania were studied for a two-year period between september 1999 and july 2001. collections of both nymphal and adult ticks occurred at 29 sites using a blanket or white cloth dragging technique. the species recorded in the order of decreasing abundance were rhipicephalus appendiculatus, boophilus spp., and ambylomma variegatum. rhipicephalus appendiculatus field infestation levels varied across admini ...200617249338
a comparison of seroprevalence and risk factors for theileria parva and t. mutans in smallholder dairy cattle in the tanga and iringa regions of tanzania.a cross sectional serological survey was carried out in two geographical small-scale dairying areas of tanzania to determine the distribution and prevalence and to quantify risk factors for theileria parva and t. mutans during the period january to april 1999. the prevalence of serum antibodies to these two theileria parasites was determined using an indirect enzyme-linked immunosorbent assay (elisa) technique. the results suggest that the parasites are widely distributed through out the two stu ...200717015024
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