After days worth of delays there were concerns about the cleanliness of the Seine River for swimmers, and now it appears those concerns were extremely well-founded. Belgium has withdrawn from the mixed relay triathlon race on Monday after losing a swimmer to a bacterial infection. Claire Michel of Beligum came down sick after swimming in the Seine in the women’s triathlon on Wednesday. She finished that event in 38th place. Worse, her illness would sideline her for the rest of the Olympics. According to journalist Tim Heming of triathlete.com, the Belgian press is reporting that Michel has E.c…