oh, the thread got some replies

what i gathered online is.... its very rare in pythons, more common in boas. Boas can carry it hidden for a while, pythons quickly develop neuro problems and die. people say it can kill a python as quickly as within a few days to 2 weeks.

its quite contagious, when snakes come in contact or something comes into contact with more than one snake, but it doesnt seem to go from one enclosure to the other if everything is hygienic. Maybe its as contageous as the flu, except that snakes extremely rarely sneeze and because of that just dont produce aerosoles. however, combine it with mites, and it becomes extremely contageous, mites can transmit the disease and like to switch enclosures and explore to find new victims. Even if highly contageous, unless snakes start whistling and hissing like crazy if they get the disease (have never heared about that), or unless you do something unhygienic like re-using substrate, there is just no way it could spread through a collection unless mites are involved. A virus cannot walk, it sticks to stuff and permeates all bodily fluids or in the worst case occasionally flies with the air current in a tiny sneeze droplet. Mites do walk, they move around a lot.

so, not much is known, the only thing im quite sure about after reading up is the issue of transmission via blood-sucking mites.

if we could in addition manage to really confirm that it kills pythons quickly, then this would mean: Python keepers dont need to worry much about this disease, as long as some quarantining is practised and the collection is kept 100% free of mites and parasites.