1.   Analysis of samples from the women revealed genetic material from an arenavirus, one of a family of pathogens that have caused hemorrhagic fevers in Africa and South America.

2.   And they have found that the vole - already linked to two other viral diseases, nephropathia epidemica and Korean hemorrhagic fever - harbors several previously unidentified viruses.

3.   Another, more severe, form of the disease, dengue hemorrhagic fever, is not well understood, but is gaining strength throughout Mexico and Latin America.

4.   A viral hemorrhagic fever, on the other hand, would always be transmitted person to person, Duncan said.

5.   By coincidence, Gubler said he had been working with a pediatrician in Surat on a viral infection known as dengue hemorrhagic fever.

6.   Dengue is once again well-established throughout Latin America, and the number of cases of dengue hemorrhagic fever is creeping upward.

7.   Ebola causes the lethal and highly contagious hemorrhagic fever that killed scores of people in central Africa this year.

8.   Ebola is a member of the hemorrhagic fever virus group that produce flu-like symptoms and fever and that kill by causing uncontrollable bleeding throughout the body.

9.   Exotic new and re-emerging viruses, including several that cause hemorrhagic fever, are lurking in rats, mice, ticks and mosquitoes throughout the United States.

10.   Experts in hemorrhagic fevers in Sao Paolo state had suspected her illness was caused by yellow fever.