Middle East respiratory syndrome (MERS), also known as camel flu is a viral respiratory infection caused by the MERS-coronavirus (MERS-CoV). MERS-CoV is a betacoronavirus derived from bats Symptoms may range from mild to severe. They include fever, cough, diarrhea, and shortness of breath. the virus to severe acute respiratory syndrome (SARS), and it has been referred to as Saudi Arabia's SARS-like virus. MERS-CoV is thought to spread from and infected person to others though respiratory secretions, such as coughing. In other countries, the virus has spread from person to person through close contact, such as caring for or living with an infected person.
The virus does not appear to pass easily from person to person unless there is close contact, such as providing unprotected care to an infected patient. There have been clusters of cases in healthcare facilities, where human-to-human transmission appears to be more probable, especially when infection prevention and control practices are inadequate
The clinical spectrum of MERS-CoV infection ranges from no symptoms (asymptomatic) or mild respiratory symptoms to severe acute respiratory disease and death. A typical presentation of MERS-CoV disease is fever, cough and shortness of breath. Pneumonia is a common finding, but not always present. Gastrointestinal symptoms, including diarrhoea, have also been reported. Severe illness can cause respiratory failure that requires mechanical ventilation and support in an intensive care unit.