Who are the key epidemic prevention groups?

The key population for epidemic prevention and control refers to the staff in key places and institutions, people with high infection risk or low resistance, including medical personnel, front-line personnel of entry and exit, customs and market supervision system, police, sanitation workers, security guards, cleaners, port transport employees, couriers, water and electricity workers, home isolation medical observation or home health monitoring personnel, rescuers in local epidemic areas, epidemic prevention and control personnel, vagrants and beggars.