Bacterial Diseases in Humans – Study Notes for SSC CHSL

Bacterial Diseases in Humans: There are a lot of diseases that are caused by bacteria, which are a type of microorganism. In this blog, we will be discussing the diseases that are caused by bacteria in humans. This topic is helpful for competitive exams like SSC CHSL, SSC CGL and Railways.

What is Bacteria?

Bacteria are mostly single-celled microorganisms that are found on the earth. There are different varieties of bacteria, some of which are useful for humans whereas some are harmful to humans and cause various types of disease in humans.

What are bacterial diseases?

Bacterial diseases are diseases that are caused by bacteria. Bacterial diseases are infectious diseases and are transmitted through water, air, food, vectors, body fluids, etc.

Bacterial Diseases in Humans

Bacterial Diseases in HumansBacteria Causing the disease
Pulmonary TuberculosisMycobacterium tuberculosis
DiphtheriaCorynebacterium diphtheriae
CholeraVibrio cholerae
LeprosyMycobacterium leprae
TyphoidSalmonella typhi
PertussisBordetella pertussis
TetanusClostridium tetani
PlagueYersinia pestis
GonorrhoeaNeisseria gonorrhoeae
SyphilisTreponema pallidum
SalmonellosisSalmonella enteritis
BotulismClostridium botulinum
Pseudomonas infectionPseudomonas aeruginosa

Causes of Bacterial Diseases

Following are the causes of bacterial diseases:

  • Through contaminated water
  • Through contaminated food
  • Through bodily fluids and faeces
  • Through sexual contact with infected person
  • Through contaminated surgical equipment, razors, needles etc.


This blog was all about bacterial diseases in humans. It is an important topic that needs to be prepared by aspirants appearing for competitive exams like SSC CHSL, SSC CGL etc. We hope it will assist the aspirants in their preparation.



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