EE was working in a van, roll-up door was open part way. Was climbing in. Part of body & one leg were in,& was pushing himself the rest of the way in. Foot slipped, & scraped his right shin on the edge. Continued working. That night, noticed a big bruise on his leg, and it was swollen. The next day, it was worse, so he went tot the ER. He had a strep infection in his skin.