Biohazardous Agents Classification

You can use this web site for cross-reference of biohazardous agents which belong to either Class 2 or Class 3 . Experiments with Biohazardous Agents from Class 4 and Class 5 are FORBIDDEN at Stanford. The agents are also listed alphabetically.

A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z

A:

Acinetobacter calcoaceticus Bacterial Agents Class 2
Actinobacillus (all species) Bacterial Agents Class 2
Actinomycetes (including Nocardia species and Actinomyces species and Arachnia propionica) Fungal Agents Class 2
Adenoviruses (human, all types) Viral, Rickettsial, and Chlamydial Agents Class 2
Aeromonas hydrophila Bacterial Agents Class 2
Amycolata autotrophica Bacterial Agents Class 2
Arboviruses (all strains except those in Class 2 and 4. Arboviruses indigenous to the United States are in Class 3, except those listed in Class 2. West NIle and Semliki Forest viruses may be classified up or down as a result of conditions and geography.) Viral, Rickettsial, and Chlamydial Agents Class 3
Arizona hinshawii (all serotypes) Bacterial Agents Class 2

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B:

Bacillus anthracis Bacterial Agents Class 2
Bartonella (all species) Bacterial Agents Class 3
Blastomyces dermatitidis Fungal Agents Class 2
Bordetella (all species) Bacterial Agents Class 2
Borrelia recurrentis, B. vincenti Bacterial Agents Class 2
Brucella (all species) Bacterial Agents Class 3

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C:

Cache Valley virus Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Campylobacter fetus Bacterial Agents Class 2
Campylobacter jejuni Bacterial Agents Class 2
Chlamydia psittaci Bacterial Agents Class 2
Chlamydia trachomatis Bacterial Agents Class 2
Clostridium botulinum Bacterial Agents Class 2
Clostridium chauvoei Bacterial Agents Class 2
Clostridium haemolyticum Bacterial Agents Class 2
Clostridium histolyticum Bacterial Agents Class 2
Clostridium novyi Bacterial Agents Class 2
Clostridium septicum Bacterial Agents Class 2
Clostridium tetani Bacterial Agents Class 2
Coccidioides immitis Fungal Agents Class 3
Coronaviruses Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Corynebacterium diptheriae Bacterial Agents Class 2
Corynebacterium equi Bacterial Agents Class 2
Corynebacterium haemolyticum Bacterial Agents Class 2
Corynebacterium pseudotuberculosis Bacterial Agents Class 2
Corynebacterium pyogenes Bacterial Agents Class 2
Corynebacterium renale Bacterial Agents Class 2
Coxsackie A and B viruses Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Cryptococcus neoformans Fungal Agents Class 2
Cytomegaloviruses Viral, Rickettsial, and
Chlamydial Agents 		Class 2

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D:

Dengue virus, when used for transmission or animal inoculation experiments. Viral, Rickettsial, and
Chlamydial Agents 		Class 3
Dermatophilus congolensis Bacterial Agents Class 2

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E:

Echoviruses (all types) Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Edwardsiella tarda Bacterial Agents Class 2
Encephalomyocarditis virus (EMC) Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Endamoeba histolytica Parasitic Agents Class 2
Erysipelothrix insidiosa Bacterial Agents Class 2
Escherichia coli (all enteropathogenic, enterotoxigenic, enteroinvasive and strains bearing K1 antigen) Bacterial Agents Class 2

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F:

Flanders viruses Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Francisella tularensis Bacterial Agents Class 3

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H:

Haemophilus ducreyi, H. influenzae Bacterial Agents Class 2
Hart Park virus Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Hepatitis viruses (associated antigen material) Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Herpesviruses (except Herpesvirus simiae - Monkey B virus which is in Class 4) Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Histoplasma capsulatum Fungal Agents Class 3
Histoplasma capsulatum var.duboisii Fungal Agents Class 3
HTLV-3-HIV (determined on a case by case basis) Viral, Rickettsial, and Chlamydial Agents Class 2

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I:

Influenza viruses (all types except A/PR8/34 which is in Class 1) Viral, Rickettsial, and
Chlamydial Agents 		Class 2

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K:

Klebsiella (all species and all serotypes) Bacterial Agents Class 2

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L:

Langat virus Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Legionella pneumophila Bacterial Agents Class 2
Leishmania sp. Parasitic Agents Class 2
Leptospira interrogans Class 3 (all serotypes) Bacterial Agents Class 2
Listeria (all species) Bacterial Agents Class 2
Lymphocytic choriomeningitis virus (LCM) Viral, Rickettsial, and
Chlamydial Agents 		Class 3
Lymphogranuloma venereum agent Viral, Rickettsial, and
Chlamydial Agents 		Class 2

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M:

Measles virus Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Monkey pox, when used in vitro Viral, Rickettsial, and
Chlamydial Agents 		Class 3
Moraxella (all species) Bacterial Agents Class 2
Mumps virus Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Mycobacteria (all species except those listed in Class 3) Bacterial Agents Class 2
Mycobacterium avium Bacterial Agents Class 2
Mycobacterium bovis, M. tuberculosis Bacterial Agents Class 3
Mycoplasma (all species except Mycoplasma mycoides and Mycoplasma agalactiae which are in Class 5) Bacterial Agents Class 2

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N:

Naegleria gruberi Parasitic Agents Class 2
Neisseria gonorrhoea, N. meningitidis Bacterial Agents Class 2
Nocardia asteroides, N. brasiliensis, N. otitidiscaviarum, N. transvalensis Bacterial Agents Class 2

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P:

Paracoccidioides braziliensis Fungal Agents Class 2
Parainfluenza virus (all types except Parainfluenza virus 3, SF4 strain which is in Class 1) Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Pasteurella (all species except those listed in Class 3) Bacterial Agents Class 2
Pasteurella multocide type B ("buffalo" and other foreign virulent strains) Bacterial Agents Class 3
Polioviruses (all types, wild and attenuated) Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Poxviruses (all types except Alastrim, Smallpox, and Whitepox which are in Class 5, and Monkey pox which, depending on experiments, is in Class 3 or 4) Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Pseudomonas mallei Bacterial Agents Class 3
Pseudomonas pseudomallei Bacterial Agents Class 3

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R:

Rabies street virus Viral, Rickettsial, and
Chlamydial Agents 		Class 3
Rabies virus (all strains except Rabies "street" virus - fresh isolate which should be in Class 3) Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Reoviruses (all types) Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Respiratory syncytial virus Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Rhinoviruses (all types) Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Rhodococcus equi Bacterial Agents Class 2
Rickettsia (all species except Vole rickettsia when used for transmission or animal inoculation experiments) Viral, Rickettsial, and
Chlamydial Agents 		Class 3
Rubella virus Viral, Rickettsial, and
Chlamydial Agents 		Class 2

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S:

Salmonella (all species and all serotypes) Bacterial Agents Class 2
Schistosoma mansoni Parasitic Agents Class 2
Shigella (all species and all serotypes) Bacterial Agents Class 2
Simian viruses (all types except Herpesvirus simiae - Monkey B virus, Class 4, and Marburg virus which is a Class 4 hemorrhagic fever virus) Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Sindbis virus Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Sphaerophorus necrophorus Bacterial Agents Class 2
Staphylococcus aureus Bacterial Agents Class 2
Streptobacillus moniliformis Bacterial Agents Class 2
Streptococcus pneumoniae Bacterial Agents Class 2
Streptococcus pyogenes Bacterial Agents Class 2

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T:

Tensaw virus Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Toxocara canis Parasitic Agents Class 2
Toxoplasma gondii Parasitic Agents Class 2
Treponema carateum, T. pallidum, and T. pertenue Bacterial Agents Class 2
Trichinella spiralis Parasitic Agents Class 2
Trypanosoma cruzi Parasitic Agents Class 2
Turlock virus Viral, Rickettsial, and
Chlamydial Agents 		Class 2

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V:

Vaccinia virus Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Varicella virus Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Vesicular stomatitis virus Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Vibrio cholerae Bacterial Agents Class 2
Vibrio parahemolyticus Bacterial Agents Class 2
Vole rickettsia Viral, Rickettsial, and
Chlamydial Agents 		Class 2

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Y:

Yellow fever virus (wild, when used in vitro) Viral, Rickettsial, and
Chlamydial Agents 		Class 3
Yellow fever virus,17D vaccine strain Viral, Rickettsial, and
Chlamydial Agents 		Class 2
Yersinia enterocolitica Bacterial Agents Class 2
Yersinia pestis Bacterial Agents Class 3

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Last modified: 2 December 1997
Maintained by the Stanford School of Medicine: Health and Safety Department