On Jan. 24, I got a text from the UK’s National Health Service telling me if I had returned from Wuhan and felt ill, to call a number to arrange a phone consultation. The request to stay away from my local NHS facility was polite but firm: “Please do not attend.” One month later I got another text, with a longer list of countries (China, Hong Kong, Italy’s Lombardy region, Japan, Macau, Malaysia, Republic of Korea, Singapore and Taiwan). If ill, self-isolate and call 111.
I...