21.   The defective gene is carried by women, but the disease almost always strikes young boys.

22.   The disease has not struck medical personnel so far, records show, though WHO warned some may have been exposed to the virus and may be infected.

23.   The disease strikes cloven-hoofed animals, and in those it does not kill it reduces the production of milk and meat.

24.   The fast-spreading disease struck Britain in mid-February and has touched France, the Netherlands and Ireland.

25.   The government is vaccinating cattle in areas where the disease has struck.

26.   The outbreak in Gabon is the third time the disease has struck the African continent in a year.

27.   The virus also struck parts of the Ivory Coast and Gabon, and officials said the disease could strike again elsewhere.

28.   Though most people in developed countries no longer fear polio, the disease still strikes thousands of unvaccinated children in China, Southeast Asia, Africa and India.

29.   White pox disease has struck only elkhorn coral so far, something Porter found surprising.

30.   The viral disease had struck earlier than expected, the minister added.