41.   Italian scientists reported strong evidence that they had discovered a new virus, the last major piece of the puzzle of blood-borne hepatitis.

42.   Last month a lethal new virus related to measles broke out among racehorses in Australia and killed one person before vanishing.

43.   Maybe it was a Windows update, maybe a new virus signature file, maybe some upgrade to something that a lot of people use.

44.   Medical experts say that because it is a new virus to which humans have no immunity, it could spread rapidly, infecting millions around the world.

45.   Ms. Sparks and other experts said the new virus may actually turn out to be valuable if it causes wider discussion of computer security issues.

46.   Narayan said he had been able to infect monkeys with the new virus not only by injecting it into their bloodstream but also by introducing it vaginally.

47.   New viruses pop up all the time, and with the global nature of the Internet a virus spawned in Bangkok yesterday can be on your hard drive today.

48.   New viruses are being created all the time.

49.   New viruses crop up regularly.

50.   New virus is both smarter and more destructive than the Love Bug.