This negatively-stained transmission electron micrograph (TEM) revealed ultrastructural morphology of the Middle East Respiratory Syndrome Coronavirus (MERS-CoV), which was formerly known as novel coronavirus. (MERS-CoV) was identified in 2012 as the cause of respiratory illness in people. Investigations are being done to figure out the source of MERS-CoV and how it spreads. So far, there are no reports of anyone in the US getting infected with MERS-CoV. Most people who got infected with MERS-CoV developed severe acute respiratory illness with symptoms of fever, cough, and shortness of breath. About half of them died. Some people were reported as having a mild respiratory illness. MERS-CoV has been shown to spread between people who are in close contact. Transmission from infected patients to healthcare personnel has also been observed. Clusters of cases in Saudi Arabia, Jordan, the UK, France, Tunisia, and Italy are being investigated.