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.
Not only do lobsters die of old age, they don't even live as long as humans, according to our best estimates. I've written a fairly long post trying to track down the evidence and origin of this myth here: All lobsters are mortal. Written Sep 10, 2014 Â· View Upvotes.