The novel coronavirus or NCoV, the tentative name given to a new strain of coronavirus which was first reported in the Middle East last year, may be becoming more easily transmitted between humans and doctors should be on their guard, the Department of Health said yesterday.

First discovered in a Qatari patient in Saudi Arabia last year, NCoV is a strain of virus similar to that which caused the SARS outbreak in 2003.

The Centers for Disease Control (CDC) said the NCoV is a respiratory tract infection and has a latency period of between seven and 10 days, and causes certain SARS-like symptoms, while some cases may be accompanied by renal failure.