WHO has published Revised interim case definition – novel coronavirus. Excerpt from a detailed description:
Patients to be investigated (referred to as “Patient Under Investigation”):
•A person with an acute respiratory infection, which may include fever (≥ 38°C , 100.4°F) and cough; AND
•suspicion of pulmonary parenchymal disease (e.g. pneumonia or Acute Respiratory Distress Syndrome (ARDS)) based on clinical or radiological evidence of consolidation; AND
•travel to or residence in an area where infection with novel coronavirus has recently been reported or where transmission could have occurred;* AND
•not already explained by any other infection or aetiology, including all clinically indicated tests for community-acquired pneumonia according to local management guidelines.
