Until 1906 the two foulbrood diseases were not differentiated and the condition was generally referred to as foulbrood. Phillips (1906) used the terms European and American to distinguish the diseases. However the designations did not refer to the geographical distributions but to the areas where they were first investigated scientifically (Shimanuki, 1990). White (1907) demonstrated conclusively that a bacterium that he called Bacillus larvae was the cause of American Foulbrood (AFB) disease by fulfilling Koch's postulates. The geographical origin of AFB is unknown, but it is found almost worldwide (Matheson, 1993,1996)
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