← Back to Biological Safety
| Jules Peter | 
Coliforms | 
2 | 
2024 Sep 15 | 
2025 Dec 31 | 
Asura insurance | 
- | 
Microorganisms are classified into four Risk Groups, and biological laboratories are classified into four corresponding Safety Levels:
| Safety level | 
1 | 
2 | 
3 | 
4 | 
| Permitted at GHE | 
Yes | 
Yes | 
No | 
No | 
| Description of organisms | 
Do not cause disease in health human adults | 
Can cause disease in humans, but the disease is treatable or preventable | 
Cause serious disease in humans; treatments and vaccines for these diseases may exist | 
Cause deadly disease in humans, can easily travel from one person to another; no treatments or vaccines exist | 
| Typical work area | 
Open bench | 
Class 2 biosafety cabinet | 
Class 3 biosafety cabinet | 
Full isolation suit | 
| Examples | 
E. coli K-12, S. cerevisiae (yeast), Lactobacillus, B. subtilis | 
Streptococcus, Herpes virus, most mammalian cell lines | 
Yersinia pestis (black plague), HIV, SARS virus | 
Ebola virus, Marburg virus, Lassa virus |