Question

UPSC Prelims 2017 Question:

Consider the following statements:

  1. In tropical regions, Zika virus disease is transmitted by the same mosquito that transmits dengue. 
  2. Sexual transmission of Zika virus disease is possible.

Which of the statements given above is/are correct?

  1. 1. 1 only
  2. 2. 2 only
  3. 3. Both 1 and 2
  4. 4. Neither 1 nor 2

Answer (Detailed Solution Below)

Option 3: Both 1 and 2

Detailed Solution

Explanation: 

  • Zika virus is transmitted to people primarily through the bite of an infected Aedes species mosquito (Ae. aegypti and Ae. albopictus). These are the same mosquitoes that spread dengue and chikungunya viruses. So, statement 1 is correct.

  • Zika can be passed through sex from a person who has Zika to his or her partners. Zika can be passed through sex, even if the infected person does not have symptoms at the time. So, statement 2 is correct.

Therefore, option (3) is the correct answer.

Knowledge Box

Methods of Transmission of Zika Virus:

  • From Mosquitoes
  • From Mother to Child: A pregnant woman can pass Zika virus to her fetus during pregnancy. Zika is a cause of microcephaly and other severe fetal brain defects. A pregnant woman already infected with Zika virus can pass the virus to her fetus during the pregnancy or around the time of birth. Zika virus has been found in breast milk. 
  • Through blood transfusion

Subject: Science & Technology | Health and Diseases

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