'Tough Mudder' obstacle course tied to serious bacterial infections - Livescience.com
- 'Tough Mudder' obstacle course tied to serious bacterial infections Livescience.com
- Mysterious Rashes, Vomiting Plague Competitors in California Tough Mudder Challenge PEOPLE
- Tough Mudder participants fall ill after California race | GMA ABC News
- Multiple people sickened after recent Sonoma Tough Mudder race, health officials say San Francisco Chronicle
- Several people fall ill with mysterious rashes, fever after Tough Mudder event ABC News
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