Novel coronavirus pneumonia was issued by the WHO’s European Regional Office on 24 April. The group of experts jointly sent by who and CDC arrived in Italy to help Italy control the outbreak of the new crown pneumonia. The expert group will mainly provide support in clinical management, infection prevention and control, epidemic monitoring and crisis communication. The statement said that the focus of the current work is to control the further spread of the virus between people. The statement also said that while the rapid growth of confirmed cases in Italy over the past two days was worrying, it should be noted that 80% of these cases had no symptoms or only mild symptoms.