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It is not known how inclusion body disease virus is spread--only that it is contagious. If it is like other viruses it is likely to be spread in secretions (which can be aerosolized). Research is being done at the University of Florida College of Veterinary Medicine. It is thought to be a retrovirus (similar to HIV) and therefore a vaccine is unlikely (and funding is in short supply). Boas can be carriers for several months to years and usually show gi or respiratory (pneumonia) signs prior to showing neuro signs and then dying. Pythons can also show resp and gi signs but typically progress to neuro disease more rapidly. Disease in pythons is usually less than 6 months. Several colubrids and crotalids have shown similar inclusions as IBD infected boids (from collections with IBD) but it is far less common. Biopsies are the best way to detect IBD (other than histopathology at necropsy).
Michael Wenninger DVM
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