Is the secret contact between Shanghai and COVID-19 notified by the three major operators or by the CDC?

Wu Huanyu, deputy director of the Shanghai Center for Disease Control and Prevention, said that many citizens and friends have received relevant text messages recently. This short message suggests that according to the big data survey, there may be a risk of direct or indirect contact with infected people in COVID-19 in the near future. Does not mean that the recipient is a close contact, close contact, etc.

"After receiving the text message, for the health and safety of you and your family, according to the provisions of the Law on the Prevention and Control of Infectious Diseases, the Emergency Regulations for Public Health Emergencies and other laws and regulations and the requirements of our city on epidemic prevention and control, you need to cooperate in the following points: First, immediately contact your community, unit or hotel to inform you of receiving the text message in time, and implement epidemic prevention and control measures such as nucleic acid detection according to territorial requirements, and at the same time do personal protection. Second, do health monitoring. If you have symptoms such as fever, dry cough, stuffy nose, runny nose, fatigue, sore throat and decreased sense of smell (taste), please go to the fever clinic in time. Please take personal protection on the way and avoid taking public transportation. "