The tragic stupidity of these "authorities" in china, is that there has never been a way to eliminate a virus 100%. Secondly if they are using the PCR test, it was NOT designed to detect infectious disease. Thirdly, NATURAL IMMUNITY is the best way to provide a healthy environment, by allowing the body to build antibodies to an illness. Isolation, fear, lack of fresh air & sunshine, inadequate nutrition, and wearing things like hazmat suits WEAKEN the natural immune response of the population making people MORE vulnerable to illness. It becomes a never ending vicious cycle. This is not about health or science, it is about power and control.