Medical errors are the 3rd leading cause of death in America, 10 years ago it was the 5th leading cause and 20 years ago it was in 8th place. Inventing stuff that alerts you when the doctors fuck up is like putting a band-aid on a massive shotgun wound.
How about getting some less error prone medical professionals instead, that would save hundreds of thousands more lives than something that alerts you to an infected wound, which already can be easily identified in many other ways. If its a surgical wound then the fever will happen before the changing colors are noticed by any of the lazy incompetents who staff hospitals anyway.
https://www.bmj.com/content/353/bmj.i2139>The annual list of the most common causes of death in the United States, compiled by the Centers for Disease Control and Prevention (CDC), informs public awareness and national research priorities each year. The list is created using death certificates filled out by physicians, funeral directors, medical examiners, and coroners. However, a major limitation of the death certificate is that it relies on assigning an International Classification of Disease (ICD) code to the cause of death.1 As a result, causes of death not associated with an ICD code, such as human and system factors, are not captured. The science of safety has matured to describe how communication breakdowns, diagnostic errors, poor judgment, and inadequate skill can directly result in patient harm and death. We analyzed the scientific literature on medical error to identify its contribution to US deaths in relation to causes listed by the CDC.2 
