1, Level I Biosafety Protection Laboratory (P 1 Laboratory)
P 1 Laboratory belongs to the basic laboratory, and its laboratory structure and facilities, safety operation procedures and safety equipment are suitable for microorganisms that are known to have no pathogenic effect on healthy adults, such as general microbiology laboratory for teaching.
2. Secondary Biosafety Protection Laboratory (P2 Laboratory)
P2 laboratory belongs to the basic laboratory, and its laboratory structure and facilities, safety operation procedures and safety equipment are suitable for microorganisms with moderate potential harm to people or the environment.
3. Level III Biosafety Protection Laboratory (P3 Laboratory)
P3 laboratory belongs to a protective laboratory, and its laboratory structure and facilities, safe operating procedures and safety equipment are suitable for pathogenic microorganisms and their toxins that mainly infect people with serious or even fatal diseases through respiratory tract, and there are usually vaccines to prevent infection.
The research of HIV (except serological experiments) should be carried out in the three-level biosafety protection laboratory.
4. Level 4 Biosafety Protection Laboratory (P4 Laboratory)
P4 laboratory belongs to the highest-level protection laboratory, and its laboratory structure and facilities, safety operation procedures and safety equipment are suitable for pathogenic microorganisms and their toxins that are highly dangerous to human body and spread through aerosol routes or unknown. At present, there is no effective vaccine or treatment method. Unknown microorganisms similar to the above situation must also be carried out in the four-level biosafety protection laboratory. After obtaining enough data, decide whether the microorganism or toxin should be treated in a four-level or lower laboratory.