Sick as a dog

I went kiteboarding on Wednesday, and somehow didn't see the signs warning that there were high levels of bacteria in the water from a sewage spill. On Thursday my chest started feeling tight, and by the evening I had a fever and headache. My this morning I was a complete wreck; I could barely move, my throat was killing me, I had a throbbing headache and a fever that just would not relent. I'm definitely going to spend the extra time researching water bacteria levels before jumping in next time. However, as far as I know, no one is testing viral levels (probably more technically difficult to do), which are also something to worry about.