Severe acute respiratory syndrome: Patients were epidemiologically linked: Fig 1

Severe acute respiratory syndrome Patients were epidemiologically linkedEditor-Severe acute respiratory syndrome (SARS) is a new disease that caught the medical profession in Hong Kong unawares.The causative agent, identified as a new coronavirus, is transmitted by droplets and direct contact. 1 2 Healthcare workers are at high risk, accounting for about one quarter of all cases of SARS in Hong Kong. 3 We here describe the spread of this highly infectious disease between 22 February and 8 March 2003 among the staff in four regional hospitals (A to D) in Hong Kong after admission