Which of the following human diseases is caused by bacteria?

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NTPC CBT-I (Held On: 29 Dec 2020 Shift 2)
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  1. Hepatitis A
  2. Typhoid
  3. Measles
  4. Polio

Answer (Detailed Solution Below)

Option 2 : Typhoid
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Detailed Solution

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The correct answer is Typhoid.

Key Points

  • Typhoid is a bacterial infection that can lead to a high fever, diarrhea, and vomiting and can be fatal.
    • It is caused by the bacteria Salmonella typhi.
    • Typhoid fever is a type of enteric fever, along with paratyphoid fever
  • The infection is often passed on through contaminated food and drinking water.
    • It is more prevalent in places where handwashing is less frequent.
  • Typhoid fever is uncommon in the UK, with an estimated 500 cases occurring each year.
  • Two typhoid vaccines are licensed for use for the prevention of typhoid: 
    • Oral Ty21a vaccine  and the injectable typhoid polysaccharide vaccine

​ Additional Information

  • Bacteria are found even inside the human body, on our skin, in our hairs, and on all other surfaces.
    • Bacteria inside our gut or stomach are good bacteria and we must have them to lead a healthy life. 

List of Bacterial Diseases in Humans

Human Bacterial Diseases Bacteria Responsible
Pulmonary Tuberculosis Mycobacterium tuberculosis
Cholera Vibrio cholerae
Plague Yersinia pestis
Leprosy Mycobacterium leprae

 

  • Hepatitis A : 
    • Hepatitis A is an inflammation of the liver caused by the hepatitis A virus (HAV).
    • The virus is primarily spread when an uninfected person ingests food or water that is contaminated with the feces of an infected person.
  • Measles :
    •  Measles is caused by morbillivirus, which is mostly seen in the winter and spring.
      • It is a highly contagious illness caused by a virus that replicates in the nose and throat of an infected child or adult.
      • it is spread through airborne droplets from an infected child.
  • Polio :
    • Polio is a disease caused by the poliovirus.
    • ​The virus enters the body through the mouth or nose, getting into the digestive and respiratory systems.
      • It multiplies in the throat and intestines. 
      • It can also attack the nervous system, the nerve network that helps the brain communicate with the rest of the body.
      • It happens mostly in children younger than 5.
    • The World Health Organization (WHO) continues to work to eliminate polio.
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