81.   The virus has been identified as Ebola Sudan, one of three strains that can infect humans.

82.   Urgent research was needed to provide a better test for the disease and how it could infect humans.

83.   While the disease is not fatal and cannot infect humans, it kills trade.

84.   In a statement released in Paris, the IRD said there was no evidence yet that any newly-identified SIV types had combined to infect humans.

85.   It has been around for centuries and has never been known to infect humans.

86.   Sales of beef have fallen sharply because consumers are worried that it might be possible for humans to be infected with mad-cow disease through eating beef.

87.   Scientists fear that mad cow disease can infect humans in the form of a brain disease.