11.   Tappero is among the researchers seeking the causes of unexplained deaths and serious illness that appear to be infectious.

12.   The master is back in top form with a chilling tale of unexplained death and corporate deceit in Africa.

13.   The unexplained death of Ricardo Martinez stunned family, friends and school officials who believed the teen-ager was in perfect health.

14.   There is increasing concern about the practice of attributing infant deaths to SIDS when a family has experienced more than one such unexplained death.

15.   There have been at least two unexplained deaths connected to the airport here.

16.   Wrecks, suicides, homicides and unexplained deaths provide a steady flow of corpses .

17.   County medical examiners are looking over any unexplained deaths, but have not found any cases connected to anthrax.

18.   Dr. Randy Hanzlick, president of the medical examiners group, praised the revision and said medical examiners welcome working with outside experts to investigate unexplained infant deaths.

19.   Her unexplained death outraged and shocked many Russian politicians and ordinary people.

20.   Her unexplained death outraged and shocked many Russians.