They lost me at the first sentence: "If you are healthy, you only need to wear a mask if you are taking care of a person with suspected 2019-nCoV infection."

They lost me at the first sentence: "If you are healthy, you only need to wear a mask if you are taking care of a person with suspected 2019-nCoV infection." Without being tested, how can you possibly know if you are healthy?.. What a harmful, irresponsible guidance!