91.   But the researchers warned there could be an incubation period of up to two years between infection and diagnosis of the disease.

92.   This is twice the maximum incubation period of Ebola, the WHO said.

93.   They will be obliged to give their address in Japan so that they can be monitored for the six-day incubation period of the pulmonary illness.

94.   It attacks the brain after a long incubation period, causing dementia, blindness, loss of hearing, coma and ultimately death.

95.   It has a short incubation period of two to three days which makes it relatively easy to establish the scale of an outbreak.

96.   It is most prevalent in unsanitary areas and the incubation period is from one and five weeks.

97.   It affects people who have been in contact with those carrying the virus and in whom the incubation period for the illness has now reached its end.

98.   Mbumba is counting the days -- only a few more -- until her Ebola incubation period ends, until she can be sure she has not been infected.

99.   Scientists said the virus-like ailment is believed to have an incubation period as long as several decades.

100.   Scientists said the virus-like ailment was believed to have an incubation period as long as several decades.