Once dry scabs or crusts have developed, the disease in not likely to spread.

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Scabs begin to form eight to nine days later and eventually fall off, leaving deep, pitted scars.

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As with chickenpox, the blisters turn into crusty scabs before healing after about a week or two.

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Kopple draws multidimensional portraits of labor leaders and representative workers (from diehards to scabs), and also fills you in on the how-tos of negotiating.

NEWYORKER: American Dream

However, the jury believed Mr Sheridan, and after he won the Court of Session case he branded his former colleagues "scabs" in a newspaper interview.

BBC: Scottish election: Solidarity Party profile

Specifically they discovered that Pythium ultimum, a fungus that attacks aubergines, peppers, lettuces, tomatoes and cucumbers as seedlings, Clavibacter michiganensis, a bacterium that kills young plants and deforms fruits, and Streptomyces scabies, a second bacterium, which causes potatoes to develop revolting scabs and for which no treatment currently exists, all stopped growing in the presence of the oil.

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