You need to keep them Away from the other snakes! That is what they meant by the word "Quarantine" Keep them in another part of the house farthest from your other snakes for 90 days. if they are W.C. you will need to treat them during this time. so you can add on 60 days if W.C. After the treating and you are confident that are free from all parasites and air bound strains, then and only then should they be added to your collections. Other wise you have a Good chance to spread it to your other snakes. Any questions drop me a message I would be happy to help.
Steve