|Contribution||Saw rod-shaped microbe in leprosy.|
|Notes||Hansen was not certain of causation. Although Long simply states that the rods were seen by Hansen in 1871, the earliest unambiguous evidence points to 1873 as the yer in wich the observation was made. In the Dover 1965 edition of Long's book, the index gives Page 245 for the Hansen entry. It should be Page 150.|
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