A practitioner took a scab from someone with a mild case, made an incision in the skin of a healthy person, and infected that person with the scab. Sheep-scab is a loathsome skin disease due to an acarian parasite.
I did find this link, but I don't think it will help out much, because there is nothing on the internet about it, other than this. http://en.allexperts.com/q/Wild-Animals-705/frozen-crab-life-thawed.htm. Or you can go to this link. Its about frozen lobsters coming back to life after thawed.
There are two things in particular to avoid in order to keep your lobsters alive until you are ready to cook them: heat and dryness. Keep your lobsters in a cold, damp, and suitably oxygenated environment and you can expect them to survive for approximately 36 to 48 hours after you bring them home.