Your doctor has a hunch that your respiratory infection and fever are caused by bacteria (and should be treated with antibiotics), but it might instead be a simple virus, which should be allowed to run its course. Today, lab tests could take several days to complete, but in a couple of years a handheld device called an acoustic wave biosensor might sample a droplet of your saliva to reveal within seconds whether your doctor’s hunch was correct. Just three of these biosensors, developed by the University of New Mexico Health Sciences Center and Sandia National Laboratories, exist at the ... Read More