Update: I need to know how many germans, how many americans, italinas... I need to know the statistics of deaths. Edit1: You people are not helping. Either you state what I know or you tell me to google it. I have googled it!!!
1 Sheep-scab is a condition in sheep caused by infestation with a particular type of mite (Psoroptes ovis, known as the sheep-scab mite).2  This mite is a very small wingless parasite that you can only just see with the naked eye, and then only properly under a magnifying glass or a microscope. You may see wool in the mouth of the sheep and wool may also be found on fences and other objects against which the sheep rub. 2  Fluid leaks from the irritated skin, and dries to form yellow crusts or scabs. 3  This is why the condition is called scab. 4  You will see bare, scabby patches and matted wool.
Reports on Plant Diseases. Common scab of potatoes is caused by Streptomyces scabies, a very prevalent, soil-inhabiting bacterium. This serious disease can be found in all potato-growing areas throughout the world. The scab organism sometimes occurs in soils where potatoes have never been grown.