What are the criteria for determining close contacts of the new coronavirus

Close contacts refer to those who have been in contact with suspected cases, confirmed cases and positive testers in one of the following situations, but have not taken effective protection:

(1) Co-living, studying, working, or other people in close contact, such as working closely or sharing the same classroom or living in the same house.

(2) Medical staff, family members, or other people who have similar close contact for diagnosis, treatment, nursing, and visits to patients, such as visiting patients or staying in a closed environment, other patients and their accompanying staff in the same ward.

(3) People who take the same transportation and have close contact, including caring for nursing staff on the transportation; accompanying persons (family, colleagues, friends, etc.); after investigation and evaluation, it is found that it is possible to have close contact with suspected cases, confirmed cases and Other passengers and flight attendants who tested positive.

(4) After the investigation, the on-site investigators have assessed that they are suitable for other personnel in contact with close contacts.

When determining close contacts and analyzing the possibility of their infection, the clinical manifestations of the case, the way of contact with the case, the protective measures taken during the contact, and the environment exposed to the case pollution should be considered comprehensively. And the degree of the object and other factors to make a comprehensive judgment.