Courses
Courses for Kids
Free study material
Offline Centres
More
Store Icon
Store
seo-qna
SearchIcon
banner

What causes tuberculosis?
A. Humans
B. Bacteria
C. Virus
D. Animals

Answer
VerifiedVerified
413.1k+ views
Hint: A disease is a condition in which cells, tissues, and organs' normal functions are disrupted. Diseases are frequently thought of as medical illnesses with distinct indications and symptoms. When a person is sick, he displays a variety of symptoms and indicators that can range from mild to severe, depending on the medical condition. There are two categories of diseases: infectious and Non-infectious. Diseases are caused by a variety of microorganisms and are classed as bacteria, fungus, viruses, and other microorganisms.

Complete answer:
Option A: Infectious diseases are illnesses brought on by bacteria, viruses, fungus, or parasites.
So, option A is incorrect.
Option B: When someone with active tuberculosis in their lungs coughs or sneezes, the TB bacteria-laden droplets are inhaled by someone else.
So, option B is correct.
Option C: AIDS, HPV infection, and viral hepatitis are caused by viruses that elude immune responses and create chronic illnesses.
So, option C is incorrect.
Option D: Animal disease is a disturbance in an animal's normal state that disrupts or changes its vital processes. Known as zoonotic illnesses or zoonoses, animals can sometimes carry hazardous bacteria that can transmit to humans and cause illness. Example: Blastomycosis and Psittacosis
So, option D is incorrect.

Therefore, Option B is the correct answer.

Note:
The bacteria that causes tuberculosis is Mycobacterium tuberculosis. Tuberculosis is most commonly associated with the lungs, although it can also affect other regions of the body. The majority of infections are asymptomatic, which is known as latent tuberculosis. A chronic cough with blood-containing mucus, fever, night sweats, and weight loss are all common symptoms of active tuberculosis. Tuberculosis is transferred through the air by patients who have active TB in their lungs coughing, spitting, speaking, or sneezing.