Ebola is for wimps! Some Australian scientists were trying to come up with a mouse contraceptive vaccine, for use in pest control. And they succeeded. Unfortunately, the virus they created works by killing mice before they can breed, and killing them very very well. Oh, and it's extremely vaccine-resistant: 100% death without vaccine, 50% with. And any kid with a Li'l Johnny Gene Engineering Kit could conceivably make a human version. Anyone got some smallpox virus laying around?
Another chink in the armor of anti-fat bigots, haters and discriminators: Scientists discover common virus appears to cause obesity. Interestingly, it also seems to lower cholesterol at the same time.