There are more than 20 epidemic transmission chains in Chengdu and more than 900 cases have been reported. Jinjiang, the worst epidemic, is affected by the high temperature weather in Chengdu in summer. Many people swim to cool off the heat and get together without masks. Two swimming and entertainment places gather and spread. Tourists living in the Global Water World Center are scattered, and there is a great risk of the spread of infectious diseases. A total of 766 local confirmed cases were reported in Chengdu. The local spread of the epidemic is on the rise. The traces involve public places, residential quarters, training institutions, schools, railway stations, restaurants, vegetable markets, shopping malls and amusement parks in 22 districts and counties of the city. The epidemic situation in this city is extremely complicated and severe because of its rapid spread, many hidden cases, scattered case activities and wide range of dangerous places.

Local agricultural products such as vegetables, livestock and poultry are produced in an orderly manner, and the total supply of various agricultural products is sufficient and the categories are rich. The notice of COVID-19 epidemic prevention and control headquarters on nucleic acid detection in the whole city did not require people not to go out to buy, but to buy daily necessities in an orderly and effective manner. The results of gene sequencing showed that it was an Omicron variant BA.2.76, which was homologous to the virus strains prevalent in many places inside and outside the province, and a large-scale mass epidemic broke out in many places in China.

The root cause of this disease is obvious, which is an imported epidemic, affecting the market and commercial fields, mainly affecting service personnel, and spreading to families and communities. Infected people have high viral load, strong infectivity, fast transmission speed, hidden transmission route, complex environment, complex activity track and wide range of people and epidemic areas. There have been many community transmission, and there will be more cases in the short term. The youngest infected person is 1 1 month to 86 years old. For people in high-risk areas? Stay at home, door-to-door service? , people in the middle risk area? Stay at home, stay at home in other low-risk areas, and implement temporary traffic control measures at the entrances and exits of expressway, railways, aviation and other cities, except for special vehicle personnel.