how long was katniss knocked out for? who was killed during that time and how many are left?

Katniss thinks "more than a day has passed, possibly two". Rue tells her there are 10 tributes left. What's more, she has been spying on the Career camp and has some information. They have camped out alongside the lake and Cornucopia, living off its supplies. What's more, Peeta is no longer with them.