| Organism | Helicobacter pylori (Formerly known as Campylobacter pylori) |
| Organism type | Bacteria |
| Discovered by | Warren & Marshall (1983) |
| Host | Human |
| Ecological niche (in humans) | Stomach (gastric epithelium/Mucous layer) |
| Unique feature | Survival in the harsh acidic conditions (pH < 2) of the stomach |
| Infected people |
|
| Classification (disease) | Pathogenic |
| Diseases (In host – Human) |
|
| Transmission | Not exactly known (Predicted)fecal-oral or oral-oral route Poor hygiene and crowded conditions |
| FEATURES | |
| Gram staining | Gram-negative |
| Shape | Spiral-shaped |
| Size | ≈ 3 µm long |
| Culture environment | Microaerophilic |
- ≈ 50% of the world’s population is infected with Helicobacter pylori. A minority of the infected population can develop diseases such as chronic gastritis, peptic ulcers, gastric cancer (adenocarcinoma), and mucosa-associated lymphoid tissue (MALT) lymphoma
- It usually colonizes the human gastric (stomach) epithelium luminal surface
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