"Notice to Health Care Providers: Updated Guidelines for Evaluation of Severe Respiratory Illness Associated with a Novel Coronavirus"
CDC HAN Mar 2013
http://www.bt.cdc.gov/HAN/han00343.asp
"Summary

The Centers for Disease Control and Prevention (CDC) is working closely with the World Health Organization (WHO) and other partners to better understand the public health risk posed by a novel coronavirus that was first reported to cause human infection in September 2012.  The purpose of this HAN Advisory is to provide guidance to state health departments and health care providers in the evaluation of patients for novel coronavirus infection.  Please disseminate this information to infectious diseases specialists, intensive care physicians, internists, infection preventionists, as well as to emergency departments and microbiology laboratories."