A simple and specific colorimetric biosensor for early detection of Pseudomonas aeruginosa wound infections.

Summary: Wound infections can be dangerous, especially when caused by a tough bacteria called Pseudomonas. To catch these infections early, scientists created a special color-changing bandage sensor. The bacteria release a specific gas called hydrogen cyanide. The sensor uses a form of vitamin B12 that reacts to this gas, changing color from orange to purple! The researchers tested different materials and found one (PVAc) that works perfectly to hold the sensor. In tests on lab-grown bacteria and human skin samples, the sensor changed color in just 10 to 12 hours. It even works after sitting on a shelf for two years. This is a promising new tool to help doctors spot infections fast and treat them sooner!