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Bacteria-sniffing wand could help prevent foodborne illnesses

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One in six Americans (or 48 million people) get foodborne illnesses every year. Better detection can lower that number dramatically. Bacteria detection sniffers have been studied for several years now. They are based on a wireless acoustic wave sensor platform, which is a fancy way of saying that it vibrates at a very specific resonance. When a bacterium attaches itself to the sensor, the change in mass causes the sensor's resonant frequency to change accordingly.

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