No.1 What is a close contact? Those who have one of the following contacts with the case after the onset of the disease, but have not taken effective protection: 01. Those who live, study, work or have other close contacts with the case, such as working in close proximity to the case or sharing the same classroom or living in the same house with the case.02. Those who treat, care for, or visit the case, family members, or others who have similar close contacts with the case, such as those who directly treat and care for the case, visit the patient in the confined environment where the case is located, or stay with other patients and their companions in the same room with the case. 03. Nursing care of the case, visiting the patient or staying in the confined environment where the case is located, other patients in the same ward as the case and their companions. 03, and the case on the same transportation and have close contact with the personnel, including in the transportation of the care of the patient care of the patient’s personnel, the patient’s fellow travelers (family members, coworkers, friends, etc.), the investigation and assessment of the possibility of close contact with the patient found to be the other passengers and crew. No.04. Other persons who are assessed by the on-site investigator to be eligible for contact with close contacts.No.2 Suspected Exposed Person? Suspected exposed persons are those who were exposed to wild animals, articles and environment that tested positive for novel coronavirus and did not take effective protection at the time of exposure, such as processing, selling, handling, distributing or managing etc. No.3 What is a suspected case? History of travel or residence in Wuhan within two weeks prior to the onset of the disease; or previous exposure to a patient with fever accompanied by respiratory symptoms from Wuhan within 14 days prior to the onset of the disease, or clustered onset of the disease. At the same time, the following clinical manifestations were met: i. fever; ii. with the imaging features of pneumonia, i.e. early presentation of multiple small patchy shadows and interstitial changes, which were obvious in the extrapulmonary bands. It progresses to multiple ground glass shadows and infiltration shadows in both lungs, and in severe cases, solid lung changes may occur, and pleural effusion is rare. iii. Early onset of the disease, the total number of white blood cells is normal or decreased, or the lymphocyte count is decreased. no.4 Under what circumstances can home medical observation be performed? Close contacts or suspected exposed persons are under medical observation. Medical observation includes home isolation medical observation and centralized isolation medical observation. Currently, home isolation medical observation is the main practice in all areas. The period of medical observation is 14 days after the last unprotected contact or suspected exposure. Those who do not develop the disease at the end of the observation period can resume normal study, work and life.No.5 What should be noted during home medical observation?01. During the period of home medical observation, the subject shall not go out and take the initiative to accept regular inquiries from the local medical and health care institutions, etc.02. The subject shall wear a disposable medical-surgical mask or an N95 mask, and the used masks shall be wrapped tightly with a plastic bag or plastic wrap and thrown into a garbage can. The used mask should be wrapped tightly in a plastic bag or plastic wrap and then thrown into the garbage can. Before wearing a new mask and after disposing of the used mask, it is necessary to wash hands in time, and when washing hands, use flowing water and soap or hand sanitizer to wash hands correctly, to avoid contaminating other items by hand and causing secondary transmission.03. Open the windows for ventilation, so that the indoor air is directly exchanged with the outdoor air, and to keep the indoor air flowing, to reduce the indoor concentration of disease-causing bacteria, and to reduce the risk of disease transmission.04. During the period of medical observation at home, the object of observation should have an independent room as far as possible, and should be kept in a separate room. The subject of observation should have a separate room and minimize contact with other family members. If the conditions are not available, please ensure a distance of at least one meter. The daily necessities of the subject under observation should be completely separated from other family members to avoid cross contamination. Tableware should be washed separately, and can be cleaned with disinfectant or sterilized by boiling water. Changing clothes and towels can be soaked in disinfectant and then washed, or can be sterilized by steaming.05. During the period of medical observation at home, the subject under observation should mainly rest and recuperate. Food should be light and diversified to ensure sufficient nutrition. The mind should be calm, not anxious or afraid. Ensure sufficient sleep, reduce internet access, long time watching videos, etc. 06. During home medical observation, if the condition worsens, the subject should go to the hospital in time. Wear a mask for the whole period and avoid taking public transportation to avoid infecting others.No.6 What should family members do to protect themselves during medical observation at home?1. It is better to fix a family member in good health to take care of the person under observation.2. Do not share daily necessities, tableware, etc., with the person under observation to avoid indirect infection.3. In order to come into contact with the person under observation or enter the room of the person under observation, wear a disposable medical mask or N95 mask. Surgical mask or N95 mask. The mask should be changed on time. If the mask becomes wet or dirty, replace it immediately and wash your hands with running water and soap or hand sanitizer.4. Do not come into direct contact with the secretions of the observed person, especially sputum and feces. Use disposable gloves to handle urine, stools and other wastes of the observed person, and wash hands after removing the gloves.5. Disinfect the room properly, clean the table tops of the dining table, bedside table, bedroom furniture and other countertops with disinfectant, and the sheets, covers and clothes of the observed person should be cleaned by soaking them in water at 60℃ to 90℃ and dried thoroughly.6. Observe the condition of one’s own health, and when there are symptoms such as fever, cough, and fatigue, especially when accompanied by If you have symptoms such as fever, cough and fatigue, especially when accompanied by difficulty in breathing, please consult a doctor in time. Source: Health China “Home medical observation” full strategy: who needs? How to “observe”? What should family members do?