1.   He wants to do more work on the Rift Valley fever virus, which he has been investigating for years.

2.   Hemorrhagic fever viruses like Sin Nombre are among the most dangerous biological agents known.

3.   The university plans to use it to study South American hemorrhagic fever viruses.

4.   Ebola virus, one of a family of hemorrhagic fever viruses, was a likely candidate, researchers said.

5.   The recommendations deal with hemorrhagic fever viruses, whose most severe symptom is bleeding under the skin or from body orifices.

6.   Foreign meat sales have slumped in the past year, however, after a few South African ostrich carcasses were linked to the potentially deadly Congo fever virus.

7.   He was bitten by a mosquito carrying the Ross River fever virus, a debilitating disease which sapped his energy.