Bed Bugs Part 2

This really isn't bed bugs but the title just seemed appropriate for my situation (esp after my experience in Ecuador).

Instead of using A/C at night, most Israelis sleep with the windows open. This wouldn't be a problem for most people, but I don't have screens on my windows. Soooo, I am getting bites in the middle of the night (I found out this is happening to other people in my program who don't have screens on their windows.). I wake up most mornings and find new bites. Someone told me that blood type O is the sweetest blood type and guess what type I have??

I've resulted in sleeping with a bit of bug repellent on, but that doesn't seem to really help the problem entirely. Any suggestions would be greatly appreciated.