Researchers have been puzzled by a mysterious type of antibiotic resistance called heteroresistance, where a small fraction of bacteria can evade antibiotics. Microbiologist Karin Hjort is on a mission to uncover the mechanisms behind this phenomenon. Heteroresistant bacteria can rapidly switch between resistant and susceptible states, making it difficult to detect using routine clinical tests.

Source: https://www.livescience.com/health/viruses-infections-disease/bacteria-that-switch-antibiotic-resistance-on-and-off-are-going-undetected-microbiologist-karin-hjort-is-on-a-mission-to-find-out-how-they-do-it