Human Diseases caused by Bacteria
| Name of disease | Name of Bacteria | Affected organs |
| Diphtheria | Corynebacterium diphtheria | Respiratory system |
| Pertussis or Whooping cough | Bordetella perfussis | Respiratory system |
| Tetanus | Clostridium tetani | Nervous system |
| Cholera | Vibrio Cholera | Intestine |
| Typhoid | Salmonella typhi | Intestine |
| Pneumonia | Streptococcus pneumonia | Lungs |
| Syphilis | Treponema pallidum | Urinary path |
| Gonorrhoea | Neisseria | Urinary path |
| Leprosy | Mycobacterium leprae | Nervous system |
| Meningitis | Streptococcus pneuminiae | Membrane of brain
|
| Tuberculosis | Mycobacterium Tuberculosis | Lungs |
| Plague | Pasteurella pesties | Lungs , area between two legs |