[[File:Theileriosis_diarrhoea.jpg|thumb|200px|right|Bloody diarrhoea often seen in Theileriosis cases]]
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Theileriosis is a disease of mammals and birds caused by a [[protozoa | '''protozoal''']] pathogen which resides within the [[Lymphocytes - Introduction | lymphocytes]] and [[Macrophages | macrophages]]
Theileriosis is a disease of mammals and birds caused by a [[protozoa | '''protozoal''']] pathogen which resides within the [[Lymphocytes - Introduction | lymphocytes]] and [[Macrophages | macrophages]]