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.
They do have a rather unique feature in that lobsters do not die due to aging. They become stronger and more fertile with age due to the presence of enzyme telomerase (repairs DNA sequences). Thus lobsters continue to live until caught, injured or inflicted by disease.