"This document provides updated surveillance guidance for novel coronavirus (nCoV). WHO [World Health Organization] will continue to update these recommendations as more information becomes available. Current numbers and descriptions of reported cases are found on the main WHO novel coronavirus page. The primary changes included in this revision are:  Addition of a recommendation to test individuals with unusually severe respiratory disease even in the presence of another aetiology if the other agent does not fully explain the patient's illness.  Specific revised recommendations for countries where the novel corona virus has been detected.  Recommendations for investigations and studies to be carried out where cases are detected, which may help describe critical clinical and epidemiological features of the virus."
World Health Organization
World Health Organization: http://www.who.int/en/