11.   Because the BSE incubation period can be several years, we must consider that a protracted BSE battle has just begun.

12.   After a two-week incubation period, flu-like symptoms developed. . .

13.   After an incubation period of several days after exposure, those symptoms emerge a lot like a flu.

14.   But the window of opportunity during the two-week incubation period is running out.

15.   But with cyclospora, the incubation period is about a week, longer than for many other food-borne infections.

16.   Cohen said Tuesday that the incubation period for most inhalation-anthrax cases was within two weeks.

17.   Fenn, a professor of history at George Washington University, begins by charting the course of the disease from its asymptomatic incubation period to its monstrous effects.

18.   First, it has been almost two months since the cross-contamination occurred, and the anthrax incubation period is two months.

19.   Given the long incubation period of the virus, he most likely was a teenager when he was infected.

20.   How long and how variable is the incubation period?