[1] Univ Pretoria, Fac Vet Sci, Dept Vet Trop Dis, Cyst Forming Protozoan Parasite Res Grp, Pretoria, South Africa
[2] Ross Univ, Clin Sci Dept, Sch Vet Med, Basseterre, St Kitts & Nevi
[3] Univ Complutense Madrid, Vet Fac, Dept Anim Hlth, Saluvet Grp, Madrid, Spain
[4] Eduardo Mondlane Univ, Ctr Biotecnol, Maputo, Mozambique
[5] Univ Pretoria, Fac Vet Sci, Dept Prod Anim Studies, Pretoria, South Africa