31.   A computer is infected with Klez the moment a computer user opens an e-mail attachment containing the virus.

32.   An international team of medical experts from WHO has been working with health officials in both countries to help contain the virus.

33.   An international team of medical experts from WHO was working with health officials in both countries to help contain the virus.

34.   And cells from newborns are unlikely to contain a virus dangerous to transplant patients that lurks harmlessly in most adults.

35.   Because Ebola is believed to be spread primarily through an exchange of body fluids and secretions, not casual contact, the doctors feel they can contain the virus.

36.   Deputy Prime Minister Abdullah Ahmad Badawi said Tuesday that authorities were trying to contain the virus and insisted the problem was confined to Perak.

37.   Health officials agree that trying to contain the virus in Kinshasa would be a logistical nightmare.

38.   It said health officials found the cholera embryo, which contains the virus that can infect humans, in the sewer system.

39.   Laboratories with materials containing or likely to contain polio virus would then need to decide between transferring them to high security facilities or inactivating or destroying them.

40.   Laboratories with materials containing or likely to contain polio virus will then need to decide between transferring them to high security facilities, inactivating them or destroying them.