With the mysterious Persian Gulf Syndrome lingering in veterans of that war in 1991, scientists and infectious disease specialists are searching now for clues from any illnesses during the war in Iraq.
Since March, there have been about 100 illnesses there. The Surgeon General's Office says, given the number of the troops deployed, that number is not big enough for a red flag, but officials do want to learn more about 15 of those cases that were critical, two of whom died. They say those cases are not connected, that they came from many different troops in different locations and at different times.
Scientists have taken air, soil, and water samples in those areas. The good news is that so far there is no evidence of exposure to chemical or biological weapons.