He died in London in 2010 after contracting a water-borne disease, Leptospirosis, that comes from contact with rat urine or ingesting water contaminated with rat urine.
"Lepto" is sometimes used as a shortened name for Leptospirosis.
Cases of Weils Disease have been reported in those who have been into the cave.
In the beginning of December 2006, the infection of water, caused 6 cases of Leptospirosis, a young male died.