Encephalitozoon cuniculi is a microscopic parasite commonly found in rabbits. Although it often remains silent, it can sometimes cause severe symptoms: loss of balance, head tilt, coordination issues, and even paralysis or kidney problems.
A Highly Prevalent Parasite
Between 40% and 80% of domestic rabbits have been exposed to E. cuniculi. Contamination typically occurs in the early weeks of life, either from the mother or the environment. This parasite can survive for long periods—even in clean conditions—and does not require poor hygiene to spread.
Individual Susceptibility
Not all rabbits develop symptoms. Their response depends on their immune system, age, and above all, their genetics. Some rabbits from highly selected or modified breeds are more fragile, making them more likely to express the disease—sometimes after a stressful event (new environment, heat, separation, etc.).
Prevention and Vigilance
A preventive veterinary check-up can be useful for sensitive or fragile rabbits, especially before a boarding stay. At Sweetnest, I remain attentive to the individual health needs of each guest, including silent conditions like E. cuniculi.