Nearly two dozen participants in a "Tough Mudder" competition, who crawled, climbed and waded through a mucky obstacle course, recently reported developing bumpy, pus-filled skin rashes and fevers.
Tough Mudders are miles-long obstacle courses intended to challenge participants' physical fitness and foster teamwork. On Aug. 19 and Aug. 20, "Mudders" assembled at Sonoma Raceway in California to attempt such a course, but within 24 hours of the event, many people started to get sick.
