11.   Another theory held that this was no new virus at all, but African swine fever, a deadly danger being hushed up by the pork industry.

12.   At this early point in the research, it is premature to introduce the new viruses into humans, even if intended for good purposes, Nolan said.

13.   Because it is a new virus, Goner is not automatically blocked by many programs that look for the distinctive features of older viruses.

14.   A federal scientist said on Tuesday that his team had found preliminary evidence of a new virus that is believed to cause a new type of hepatitis.

15.   A new virus rises into the news only when it is widely circulated or especially destructive.

16.   About the best they can do is to add new viruses to their signature database as customers report problems.

17.   After the problems caused by HIV and various hepatitis viruses, the discovery of any new virus in donated blood is worrying.

18.   But new viruses are being written all the time, and if an antivirus program has not been updated recently, it cannot defend against the new threat.

19.   But new viruses seem to pop up everywhere during the holidays.

20.   But new viruses pop up every week, and some viruses are designed to hide their signatures.