Why do hotels need centralized isolation?

Medical staff are wearing protective clothing in the centralized isolation medical observation point of a hotel in Minhang District. Our reporter Zhang Chengjun learned that the hotel is currently divided into three areas, and the lobby on the 1 floor is a clean area; Public areas such as passages and elevators on each floor are semi-polluted areas; The room of the quarantined person is a polluted area. After the quarantined personnel enter the observation point through the special passage, they can only move in their own rooms and are not allowed to move.

Legal basis:

Law of People's Republic of China (PRC) on the Prevention and Control of Infectious Diseases

Article 1 This Law is formulated for the purpose of preventing, controlling and eliminating the occurrence and prevalence of infectious diseases and safeguarding human health and public health.

Article 2 The State implements the policy of putting prevention first, combining prevention with control, classified management, relying on science and relying on the masses in the prevention and control of infectious diseases.

Article 3 Infectious diseases stipulated in this Law are classified into Class A, Class B and Class C. Class A infectious diseases refer to plague and cholera. Class B infectious diseases refer to: infectious atypical pneumonia, AIDS, viral hepatitis, polio, human infection with highly pathogenic avian influenza, measles, epidemic hemorrhagic fever, rabies, epidemic encephalitis B, dengue fever, anthrax, bacterial and amebic dysentery, tuberculosis, typhoid fever and paratyphoid fever, epidemic cerebrospinal meningitis, whooping cough, diphtheria, neonatal tetanus, scarlet fever, brucellosis, gonorrhea and syphilis.