Health officials in Africa have discovered a new and extremely deadly virus which has killed 4 of the 5 people who have contracted it. Similar to Ebola, this new virus is only transmitted by blood. And, unlike AIDS which lingers undetected for a long period of time, this virus kills within hours. So, a person could die before they had to chance to spread it to others.
Unfortunately, it doesn’t have as big a following as the swine flu so I doubt that it will amount to much.