History
Until 1906 the two foulbrood diseases were not differentiated and the condition was generally referred to as foulbrood. Thereafter, the terms European and American were used to distinguish the diseases. However the designations did not refer to the geographical distributions but to the areas where they were first investigated scientifically. In 1907 it was demonstrated conclusively that a bacterium called Bacillus larvae was the cause of American foulbrood disease by fulfilling Koch's postulates. The geographical origin of AFB is unknown, but it is found almost worldwide.
Read more about this topic: American Foulbrood
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