This, to me places a rather large question mark over the accuracy of the story. Well, either that or Seagal gong sau'ed a very sick old man and was still defeated.
During the last of those journeys in 1979, misfortune struck Draeger and his team on the island of Sumatra. Visiting the Atjeh tribe, it appears that the entire group was somehow poisoned—perhaps deliberately—and as a result developed severe amebic dysentery requiring hospitalization. Although he recovered from the illness, Draeger began losing weight and grew increasingly weak. His legs swelled, causing great pain, and he found it difficult to walk or stand for very long. Serious training became difficult, then impossible.
After repeated visits to Tripler Army Medical Center in Honolulu, it was discovered that Draeger had cancer of the liver. Returning to his home state to die, he stayed first with his half brother before moving into a veteran’s hospital. It was there, on October 20, 1982, exactly 92 years after his hero, Sir Richard F. Burton, died, that Donn F. Draeger passed away from metastasized carcinoma. He was buried at Wood National Cemetery in Milwaukee, a 50-acre final home to more than 37,000 American veterans. Draeger’s grave lies in Section 4, Site 377.