Abdominal pain, fever, diarrhoea—these symptoms could point to an infection with the bacterium Yersinia. The bacterium's pathogenic potential is based on a syringe-like injection apparatus called ...

Swallow the wrong microbe, and you might end up in the hospital with a needle or two in your arm — and plenty of itty-bitty bacterial needles poking at you from the inside. That’s because many ...