That is NOT true. No animal just caries rabies. If they get it they die from it like everything else. Rabies vector means in the wild they tend to get it more than other species, raccoons, foxes, bats, and skunks tend to get labeled this way but there is no such thing as a carrier that never develops symptoms but passes it around.
Infected animals do not shed the virus until they start to show symptoms. Some animals display dumb rabies, where instead of being manic they seem "tame". If you come across a seemingly tame wild animal it is probably rabid and that IS displaying a symptom and it is going to die. A breeders raccoons not exposed to wildlife will not develop the disease out of nowhere.
Also vaccines work on exotics they just refuse to approve them for that use for public use but they do have approval for wildlife vaccine for non-public use. Breeders usually vaccinate their babies.
The odds of a domestic skunk having raccoon round worm is also extremely and they are nominally on a regular worming schedule just in case. The risk in general is not all that high anyway. The largest problem is in young children who eat dirt contaminated with wild raccoon feces and it sometimes causes blindness.
There is a number of worms that in the wrong host can migrate to other organs of the body any of these could migrate to the brain, including one house cats can carry. The odds of any of them infecting someone and migrating and infecting the brain or eyes to the point of causing major symptoms is very small, especially if you wash your hands after handling poop.
Dogs and cats carry worms that can kill your children http://www.cdc.gov/ncidod/dpd/parasi...prevention.htm
Domestic;y raised exotics are at a lower risk than most dogs and cats of getting rabies. Many people still do not vaccinate their dogs and cats and let them run loose.
"Occasionally larvae become trapped in the small blood vessels behind the eye (Ocular Larva Migrans) or in the brain." http://www.petevents.com.au/news_articles/16.shtml
Human toxocarosis via pets vs. Baylisascaris http://www.geocities.com/RainForest/...roundworm.html
It should be noted that visceral larva migrans and ocular larva migrans in humans (and other animals) can also be caused by feces of other animals - most notably pet dogs and cats.
Human infection with the toxiocaris larvae of canine or feline roundworms is known collectively as toxocariasis. All cases of toxocariasis come from pets, according to the Texas Dept. of Health, Div. of Zoonosis Control, which states an estimated 10,000 new cases of roundworm infection occur in children every year, most often as a result of eating dirt contaminated with animal feces. Most human infections are mild enough to go unnoticed and apparently produce no permanent damage. However sometimes infection results in severe and even fatal disease. Common symptoms include abdominal pain, headache, weakness, lethargy and wheezing. Due to the public health significance, it is important to distinguish Baylisascaris from Toxocara. Not to minimize the risk, but in many states raccoons are being systematically euthanized because of the panic over perceived danger of transmission of the raccoon roundworm to humans as a result of two documented cases (one a fatality) to date,
including a case in 1998 where a child in Pacific Grove, California was infected by eating bark on firewood that had been contaminated by raccoon feces. Over 177 local wild raccoons were systematically executed before a lawsuit by the City's concerned citizens brought the killings to a halt. Eradication of raccoons will not prevent the very rare disease visceral larva migrans in humans. However, education and some common sense might.