What does the infection-related epidemic situation mean?

Influenza control is a very important task in the prevention and control of infectious diseases and a key link in controlling the spread of the epidemic.

At present, the main sources of most influenza investigation information include: First, the investigation letters sent by superior disease control departments or administrative departments (including close contacts, sub-close contacts, general contacts, key risk personnel, etc. ); the second is the list of people involved in the epidemic in key areas pushed by big data; the third is the circulation of cases. The time when the assisted investigation information is sent is uncertain. It may be during the day or early in the morning. CDC emergency personnel need to complete the investigation immediately after receiving the investigation letter, so the CDC is often brightly lit and crowded at night. The information on the investigation assistance letter is often incomplete and there is no contact information, which requires the cooperation of the public security system.