What does it mean to track the flow direction according to local requirements and implement necessary detection and isolation measures as appropriate?

It means that the traffic is adjusted through telephone follow-up and isolation measures are taken according to the situation.

Epidemiological investigation is the abbreviation of epidemiological investigation. Generally speaking, epidemiological investigation is the key to epidemic control, and the information collected by epidemiological investigation is priceless, which can play a key role in effectively curbing the epidemic.

The purpose of traffic adjustment is to understand: in the past period of time, the action trajectory of key people, the people they met and what happened. To find out the exposure, contact, activity track and medical treatment of the case or the person who is in close contact with the case. Search for clues related to the source and route of infection and clarify the transmission chain, so as to provide basis for judging close contacts, taking isolation measures and delineating disinfection scope.