More than 70 people have fallen ill after competing in the Tough Mudder course at Sonoma Raceway in Northern California last weekend with reports of rash, fever, muscle pain, nausea and vomiting. SUBSCRIBE to ABC News on YouTube: bit.ly/2vZb6yP Latest updates: abcnews.go.com Watch FULL EPISODES on Hulu: abcn.ws/3bzvQQn #news #health #california #mudrun #toughmudder #abcnews