Encephalitozoon cuniculi is an intracellular protozoan parasite which can cause a range of clinical signs including hind limb paresis, head tilt, collapse, urinary incontinence, cataract formation and lens-induced uveitis and death. Transmission is primarily via ingestion of spores shed in the urine contaminating food and/or water.
A 2006 UK study showed a seroprevalence of 52 % in domestic rabbits indicating the widespread nature of the parasite.
Panacur Rabbit is an aid in the control of E. cuniculi and it is recommended that additional preventative measures are taken such as ensuring that food and water are placed appropriately to prevent urine contamination.
E. cuniculi has zoonotic potential and infection has been reported in immunosuppressed people.