We read a lot in the news about the new Wuhan coronavirus and the illness it causes (COVID-19), but some important points often get left out.
 COVID-19 is incredibly contagious.
COVID-19 transmits extremely easily from person to person. Interpersonal contact doesn’t need to be very long; a taxi driver can get the virus from a passenger, for example. The virus may be transmissible even before an infected person develops symptoms. It may also be transmissible for a few days after a person seems to be over the virus; it is possible to get positive virus tests, even after symptoms disappear. Some people may have the disease, but never show symptoms.
 The virus likely remains active on inanimate surfaces such as paper, plastic, or metal for many days.
There haven’t been tests on the COVID-19 virus per se, but studies on similar virusessuggest that human pathogens may remain infectious for up to eight days. Some viruses that only infect animals can survive for more than 28 days. China is reported to be destroying paper currency from the hardest hit area, because people do not want to accept money which may have viruses on it. Clearly, surfaces in airplanes, trains and buses may also harbor viruses, long after a passenger with the virus has left, unless they have been thoroughly wiped down with disinfectant.
 Given Issues  and , about the only way to avoid spreading COVID-19 seems to be geographic isolation.
With all of today’s travel, geographic isolation doesn’t work very well in practice. People need food and medical supplies. They need to keep basic services such as electricity and garbage collection operating. Suppliers of food and other services need to come and leave the area and that tends to spread COVID-19.
…click on the above link to read the rest of the article…