| direct-children | documentation | graph |
| ToxicOrganism | 70 | The Class of Organisms which are poisonous to other Organisms. | ^ |
| Bacterium | 37 | A small, typically one-celled, prokaryotic Microorganism. | ^ |
| BacterialAgent | 31 | BiologicalAgents that are instances of Bacterium. | ^ |
| RickettsialAgent | 3 | BiologicalAgents that are rickettsial organisms, i.e. gram-negative bacteria that infect mammals ... | ^ |
| BacillusAnthracis | . | The Bacterium which causes the disease Anthrax. Humans may become infected with Anthrax via con... | ^ |
| ClostridiumBotulinum | . | The Bacterium that produces BotulinumToxin. | ^ |
| ClostridiumPerfringens | . | Bacterium often found in the intestines of Animals. Ingesting this Bacterium can result in Pe... | ^ |
| BurkholderiaMallei | . | The Bacterium that causes the disease Glanders. It is transmitted to humans by direct contact w... | ^ |
| BurkholderiaPseudomallei | . | Formerly known as Pseudomonas Pseudomallei, this is the Bacterium that causes Melioidosis. | ^ |
| BrucellaBacterium | . | The Bacterium which is responsible for the disease Brucellosis. This class covers Brucella Abor... | ^ |
| YersiniaPestis | . | The Bacterium that causes Plague. | ^ |
| SalmonellaTyphimurium | . | A bacterium that can cause death in young, elderly or immunodeficient people. It appears in the sto... | ^ |
| SalmonellaPartyphi | . | Causes a less severe illness than SalmonellaTyphimurium. | ^ |
| FrancisellaTularensis | . | The Bacterium that causes the disease Tularemia. Also known as Pasturella Tularensis. The Bac... | ^ |
| NeisseriaGonorrhoeae | . | The Bacterium that causes Gonorrhea. | ^ |
| ShigellaDysenteriae | . | Causes severe dysentery (even when as little as 100 bacteria are ingested). This form of dysentery ... | ^ |
| SalmonellaTyphi | . | The Bacterium that causes TyphoidFever. | ^ |
| GiardiaLamblia | . | A Bacterium that causes Gastroenteritis. It is present in many streams and lakes, and it is car... | ^ |
| SerratiaMarcenscens | . | A Bacterium that can cause death in infected Humans. | ^ |
| StaphylococcusAureus | . | A bacterium that secretes StaphylococcalEnterotoxicB. It causes chills, headache, muscle pain, co... | ^ |
| VibrioCholera | . | The Bacterium that is responsible for Cholera. | ^ |
| ClostridiumTetani | . | The Bacterium that causes the disease Tetanus. | ^ |
| BordetellaPertussis | . | The Bacterium that causes Pertussis. | ^ |
| YersiniaPseudotuberculosis | . | Causes a disease whose symptoms include diarrhea, fever, headache, skin ulcers, and post-infectious... | ^ |
| ChlamydiaPsittaci | . | The Bacterium that causes Psittacosis. | ^ |
| EscherichiaColi0157H7 | . | One of hundreds of strains of the Escherichia Coli Bacterium. This strain lives in the intestines... | ^ |
| MycobacteriumTuberculosis | . | The Bacterium that causes Tuberculosis. | ^ |
| StreptococcusA | . | The Bacterium that causes strep throat, scarlet fever, and necrotizing faciitis (flesh-eating bac... | ^ |
| BacillusCereus | . | A Bacterium that is closely related to and often found near BacillusAnthracis, the Bacterium ... | ^ |
| Legionella | . | The Bacterium that causes Legionellosis, which is known as LegionnairesDisease (when it infec... | ^ |
| CorynebacteriumDiphtheriae | . | The Bacterium that secretes a Toxin that causes Diphtheria. | ^ |
