This morning, among the 29 patients discharged from the hospital with COVID-19 in Suzhou, there are two grandparents and grandchildren, and a middle-aged couple. According to Suzhou Municipal Center for Disease Control and Prevention, according to relevant national studies, in the early stage of the epidemic of new coronary pneumonia, each patient will pass the infection to 2.2 people. Therefore, under close contact conditions such as families and companies, the disease can easily cause a clustered epidemic. As of now, among the 86 confirmed patients in Suzhou, nearly half of the household clustered cases account for, so it is still necessary for citizens to strengthen multi-level prevention and control.
Infectious Disease Prevention and Control Department of Suzhou Municipal Center for Disease Control and Prevention Chief physician Chen Liling introduced that
clustered epidemic refers to the discovery of 2 or more confirmed cases or asymptomatic infections in a small area (such as a family, a construction site, a unit, etc.) within 14 days, and there is the possibility of interpersonal transmission caused by close contact, or the possibility of infection due to joint exposure.
According to the research of the expert group of the Chinese Preventive Medicine Association for COVID-19 prevention and control, the basic regeneration number (R0) in the early stage of the epidemic is 2.2, that is, each patient will transmit the infection to 2.2 people on average. To this end, Chen Liling said that under close contact conditions such as family and company, the disease is very likely to form a clustered epidemic between family members and colleagues.
Typical cases
Case 1: A is a person from Hubei Guisu. After returning home, they visited or had dinner with many relatives one after another. Subsequently, A and several relatives were diagnosed one after another and were admitted to designated medical institutions for treatment.
Case 2: B has no history of traveling in Hubei and has been at home in Suju. His immediate family member C once stayed in Hubei for a short time. After returning to Jiangsu, C had dinner with his relatives and friends many times. Subsequently, B and C were diagnosed one after another, and many of their relatives and friends were isolated and observed as close contacts of .
Chen Liling introduced that to this end, at the level of epidemic management and discovery, our city has actively taken measures to reduce and avoid the occurrence of clustered epidemics. For example, all close contacts are subject to medical observation; make full use of big data technologies such as civil aviation, railways, and communications to strengthen monitoring; medical institutions at all levels improve the sensitivity of case diagnosis and treatment processes; strengthen the screening, tracking and centralized medical observation of case contacts, etc.
For citizens, especially those in centralized environmental offices, Chen Liling reminds that people with cough and fever should rest at home, do not go to work with illness, and try to avoid close contact with employees in the unit. "We must wear masks and always keep a good hygiene of our hands." The unit should measure the temperature of employees every day, strengthen ventilation in office spaces, and turn off air conditioners with return air; the unit should store masks and disinfectants; avoid gathering of people
