By Arik Hesseldahl

Flu-Fighting Tech

Researchers are getting smarter about how they fight flu and other maladies. Many are harnessing high-tech tools, including thermal cameras that show whether a traveler has possible flu symptoms, cell phones that help show interactions among would-be flu carriers, and supercomputers that help test "what-if" scenarios in the event of an outbreak. This BusinessWeek.com slide show highlights a sampling of the software, hardware, and other gadgets that are helping scientists monitor and contain the spread of illness.