More than 300 California runners have become sick with an unidentified virus following a mud run.
Saving Stormwater
Tough Mudder Race in California Gets Even Tougher After Illness Spreads
Hundreds involved in Tough Mudder race sick with possible staph, bacterial infections
Sonoma County Tough Mudder Event — Where Some Claimed to Smell 'Cow Manure' on Field — Sickens Hundreds
Tough Mudder racers report rash, illness after Sonoma event
Mysterious Rashes, Vomiting Plague Competitors in California Tough Mudder Challenge
Athletes break out in rashes, fever after Tough Mudder race
Sonoma County issues health advisory for Tough Mudder participants after reports of rashes, fever - CBS San Francisco
California Tough Mudder race led to bacterial infections, runners say - The Washington Post
Hundreds involved in Tough Mudder race sick with possible staph, bacterial infections
Trolling the Great Outdoors
Danger in the dirt
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