List of Diseases caused by Virus, Bacteria, Protozoa and Worm

By Ashwini Shivhare|Updated : October 1st, 2022

List of Diseases caused by Virus, Bacteria, Protozoa, and Worm: Virus, Bacteria, Protozoa, and Worm-caused Diseases is an important topic from the Biology department of the General Knowledge area. Every GK section contains around two questions on this topic. As a result, the article is quite beneficial for the next SSC Exam and other competitive exams.

Typhoid is a disease caused by an infection with the Salmonella typhi bacteria. Humans, not animals, are the source of this disease. Typhoid is caused by protozoa. For more insight, go through the entire article. In this article, we will be covering a very important topic “Various Diseases caused by Bacteria, Virus, Protozoa, and Worm” in detail.

Today we will be covering a very important topic from the Biology part of the General Knowledge section that is – List of Diseases caused by Viruses, Bacteria, Protozoa, and worms. Around 2-3 questions from this topic are asked in every exam. Thus, this post is very helpful for the upcoming government exams.

What are Viruses?

Viruses are even more microscopic than bacteria. They're not even a complete cell. They're just genetic material (DNA or RNA) wrapped in a protein coating. To replicate, they must utilize the structures of another cell. This means they'll only be able to survive if they're living inside of something else (such as a person, animal, or plant).

Disease caused by Viruses:

  • Chickenpox - It is caused by the Varicella-zoster virus.
  • Small Pox - It is caused by the Variola virus.
  • Common Cold -It is caused by Rhinovirus.
  • AIDS (Acquired Immuno Deficiency Syndrome) - It is caused by Human Immunodeficiency Virus (HIV).
  • Measles -It is caused by the Measles virus.
  • Mumps -It is caused by the Mumps virus.
  • Rabies - It is caused by the Rabies virus (Rhabdoviridae family).
  • Dengue fever -It is caused by the Dengue virus.
  • Viral encephalitis - It is an inflammation of the brain. It is caused by the rabies virus, Herpes simplex, poliovirus, measles virus, and JC virus.

What is Bacteria?

Bacteria are single-celled, microscopic organisms that obtain nourishment from their surroundings. Your child or another living thing may be part of that environment in some instances. Some bacteria are beneficial to our health; they aid in the proper functioning of the digestive system and prevent hazardous germs from entering. Some microorganisms are utilized in the production of pharmaceuticals and vaccinations.

Disease caused by Bacteria:

  • Whooping Cough - It is caused by a bacterium called Bordetella pertussis.
  • Diphtheria - It is caused by Corynebacterium diphtheriae.
  • Cholera - It is caused by Vibrio cholera.
  • Leprosy - It is caused by Mycobacterium leprae.
  • Pneumonia- It is caused by Streptococcus pneumonia.
  • Tetanus - It is caused by Clostridium tetani.
  • Typhoid - It is caused by Salmonella typhi. Typhoid is caused by protozoa.
  • Tuberculosis - It is caused by Mycobacterium tuberculosis.
  • Plague - It is caused by Yersinia pestis.

What is Protozoans?

Protozoa, like bacteria, are single-celled organisms. They are, however, larger than bacteria and include a nucleus and other cell features, resembling plant and animal cells. Moisture is a favorite of protozoa. As a result, contaminated water is frequently used to spread intestinal illnesses and the diseases they induce, such as amebiasis and giardiasis. Typhoid is caused by protozoa

Disease Caused by Protozoans:

  • Malaria It is spread by Anopheles mosquitoes. The Plasmodium parasite that causes malaria is neither a virus nor a bacteria.
  • Amoebic dysentery: It is caused by Entamoebahistolytica.
  • Sleeping sickness:  It is caused by Trypanosomabrucei.
  • Kala-azar It is caused by Leishmaniadonovani.

What is Worms?

Worms are invertebrate animals that belong to several different families. Worms are animals belonging to the groups Annelida (earthworms, polychaetes), Nematoda (roundworms), Nemertea (ribbon worms), and Platyhelminthes (worms) (flatworms). To put this in context, mammals, birds, fish, and reptiles all belong to the same phylum Chordata, which means that a human is significantly more closely connected to a fish than many worms.

Disease Caused by Worms:

  • Tapeworm: They are intestinal parasites. It cannot live on its own. It survives within the intestine of an animal including a human.
  • Filariasis: It is caused by a thread.
  • Pinworm: It is caused by a small, thin, white roundworm called Enterobiusvermicularis.


Related Articles:
SSC & Railway Exams
SSC CGL Previous year Papers
SSC CGL Job Profile

All The Best !!!


Prepare for SSC CGL 2022 with Our Latest Batch

SSC CGL 2022: लक्ष्य / Target Batch

3 Crore+ Registered Aspirants | 2.5 Crore Downloads | 50,000+ Selectionsbyjusexamprep

So why wait? Update your app right away!


write a comment


  • Around 2-3 questions are asked from the topic "Viruses and Diseases" in SSC general awareness section.

  • Best SSC general awareness books 2022 are Lucent's General Knowledge Objective, Rakesh Yadav General knowledge etc.

  • Total 25 questions are asked from the general awareness section in the SSC CGL exam.

  • Viruses are responsible for a variety of ailments, including AIDS, Common cold, Ebola virus, Genital herpes etc.

  • Mycobacterium tuberculosis is the bacteria that causes tuberculosis. TB germs are most commonly found in the lungs, although they can also be found in the kidney, spine, and brain.

SSC & Railway

CGLSSC GDDFCCILCHSLCPONTPCMTSStenoGroup DDelhi PoliceOthersCoursesMock Test

Follow us for latest updates