Coron virus usually causes mild to moderate upper-respiratory tract illness but also can affect the lower-respiratory tract. The four individuals who were identified with pneumonia are in stable condition. On Saturday the authorities confirmed the death of the second patient.
Chinese authorities said that 45 people were infected with the virus with the outbreak centred around a seafood market, which is home to eleven million people. The World Health Organisation said they estimated 1,723 cases in Wuhan would have been infected on January 12.