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Question

Smallpox is due to

A
Protozoan
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B
Helminth
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C
Virus
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D
Bacterium
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Solution

The correct option is (C) Virus

Smallpox

A person can get smallpox by coming into contact with infectious droplets left behind by an infected individual. The deadly Variola virus, which causes smallpox, is a highly contagious illness. This infectious condition has no known cure. However, it can be avoided by getting vaccinated.

  • Smallpox is caused by the virus of the family Poxviridae.
  • Symptoms include high fever, headache, and eruption on the skin that leaves the face and limbs covered with pitted scars.

What are the Causes of Smallpox?

The airborne illness, called smallpox, spreads more quickly and is mostly brought on by an infection with the fatal virus variola.

  • It spreads by the droplets produced by sneezing, coughing, and direct contact with an infected individual.
  • Sharing beverages, giving blood transfusions, and other exchanges of bodily fluids are additional ways that this virus is spread.
  • Caused simply by lightly touching an infected region.
  • Using syringes that are dirty or old.

Smallpox Virus

Variola minor and Variola major are the two subtypes of the variola virus. The orthopoxvirus genus includes the deadly variola virus, which is a member of that group. This virus's structure is similar to that of bricks, and its genetic material, DNA, which has the form of a dumbbell, makes up the majority of the virus. To reproduce within the host cell, the DNA in the core contains essential proteins. This illness has an approximate 7 to 19 days incubation period, which is followed by a high fever and the development of rashes on the face, hands, arms, legs, etc.

Smallpox Symptoms

Usually, 7 to 19 days after the variola virus infection, symptoms start to show. Following the incubation period, the general symptoms listed below manifest.

  • High fever followed by chills.
  • Nausea or vomiting.
  • Really bad headache, then additional bodily aches.
  • Development of pus or fluid-filled rashes on the face, arms, hands, etc.

Final Answer

Smallpox is due to Virus

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