Prevalence and incidence of bovine trypanosomosis in an agro-pastoral area of southwestern Burkina Faso.
The present study was conducted to determine the prevalence and incidence of trypanosomosis and to investigate some factors influencing them in an agro-pastoral area of southwestern Burkina Faso. A total of 363 crossbred cattle (Baoule-zebu peul), which were bred under natural trypanosomosis challenge, were monitored monthly for parasitaemia, packed cell volume (PCV) and serological analyses over 2years. The parasitological prevalence estimated at the beginning of the survey using the buffy coat technique (BCT) was 7.54%. As much as 66.7% of all trypanosome infections were due to Trypanosoma vivax, 23.8% due to Trypanosoma congolense and 9.5% due to T. vivax/T. congolense mixed infections. The monthly serological incidence varied from 0.29% to 19.29%. The season was the most important factor influencing the serological prevalence and incidence and the animal PCV. The dry hot season is associated with increasing seroprevalences and incidences and consequently a decreasing average of PCV. In addition, an important spatial heterogeneity was observed.
Dayo
Guiguigbaza-Kossigan
GK
IRD, UMR Trypanosomes, TA A-17/A Campus International de Baillarguet, 34398 Montpellier Cedex 5, France.
Bengaly
Zakaria
Z
Messad
Samir
S
Bucheton
Bruno
B
Sidibe
Issa
I
Cene
Bila
B
Cuny
Gérard
G
Thevenon
Sophie
S
D000818:Animals; D000913:Antibodies, Protozoan / Q000032:analysis; D002050:Burkina Faso / Q000453:epidemiology; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis / Q000453:epidemiology* / Q000469:parasitology / Q000517:prevention & control; D017753:Ecosystem; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods; D005843:Geography; D015994:Incidence; D006109:Poaceae; D015995:Prevalence; D014348:Trypanosoma congolense; D016689:Trypanosoma vivax; D014354:Trypanosomiasis, Bovine / Q000139:chemically induced / Q000453:epidemiology* / Q000517:prevention & control
D000913:Antibodies, Protozoan