81.   The virus is difficult to diagnose because it has a short incubation period and is similar to many other ailments, he said.

82.   Two incubation periods are out since the first case and there have been no new cases.

83.   While the incubation period for the plague is two to eight days, Thakur said that more people would have fallen sick if the infection were spreading.

84.   WHO experts predict the epidemic, which has an incubation period of up to three weeks, will not end any time soon.

85.   Gamma gobulin prevents the development of hepatitis A, which has a minimum two-week incubation period.

86.   He had been admitted as an emergency, but the disease had already undergone a long and deadly incubation period because his doctor failed to diagnose the symptoms.

87.   Hepatitis A, which has an incubation period of around two months, is the less serious of the two types of hepatitis virus.

88.   He said predictions of the future numbers of CJD depended on the average incubation period in humans.

89.   In these cases, however, the incubation period for CJD was believed to be less than a dozen years.

90.   All people entering Malawi from Mozambique would be put under surveillance in the tents for five days, the adequate incubation period for the symptons to show.

n. + period >>共 668
time 7.80%
transition 6.92%
holiday 2.80%
five-year 2.74%
peak 2.70%
six-month 2.48%
trial 2.44%
three-year 2.44%
incubation 2.14%
comment 2.10%
incubation + n. >>共 15
period 81.06%
time 4.55%
test 3.03%
medium 1.52%
process 1.52%
temperature 1.52%
deadline 0.76%
machine 0.76%
mixture 0.76%
service 0.76%
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