A small dot that changes colour if a patient’s wound shows early signs of infection has been invented by scientists at Queen’s University Belfast … The non-invasive indicator does not make any contact with the wound but detects the beginnings of infection by sniffing the air above it – it is the same size as a fingertip … It is the first of its kind and is predicted to bring major benefits to healthcare, especially because it can be added to already existing bandages … read more