New device quickly detects harmful bacteria in blood. Engineers have created a tiny device that can rapidly detect harmful bacteria in blood, allowing health care professionals to pinpoint the cause of potentially deadly infections and fight them with drugs. Source 4w.
That seems pretty neat; I'd also hope that they will have a similar device but with parasitical organisms - those annoying everlasting ticks and certain bugs that can somehow camouflage within your own body's operations! They're one of the reasons for many mysterious deaths out there and there should be something to at least detect them, for in some victims it may be too late when they're dead.