An ancient killer has plagued humans for millennia.

Although it's rarely considered a threat in developed countries today, it seems this long-term villain is still very much a danger in our modern world.

Research published in 2022 revealed the bacterium that causes typhoid fever is evolving extensive drug resistance, and is rapidly replacing strains that aren't resistant.

https://www.sciencealert.com/ancient-killer-is-rapidly-gaining-resistance-to-antibiotics-study-warns