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Question

How do mosquitoes help in spreading viruses /microorganisms?


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Solution

Vector:

  1. A vector is called a carrier of causative microbes for various diseases like mosquitoes, ticks, and fleas.
  2. The reproduction rates of various vectors are influenced by the climate and weather.
  3. Malaria & Dengue fever are the two most common vector-borne diseases.
  4. Such diseases spread by vectors are malaria (mosquitos), dengue (mosquitos), zika fever, rickettsial disease (ticks), Leishmaniasis (Sandflies), Trypanosomiasis, and filariasis.

Mosquitoes spread the virus by:

  1. They do not carry the virus within them.
  2. However, they transmit the virus by acting as a vector.
  3. When they bite an infected person, they become a vector.
  4. By biting another person, they infect him too.

Methods to control the breeding of mosquitoes:

  1. Destroying the breeding place of mosquitoes by avoiding standing water.
  2. Spraying insecticides to avoid breeding of mosquitoes.
  3. Allowing fishes such as Gambusia which specifically breed on fish larvae.

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