Health Sector – UHC, National Health Policy, Family Planning, Health Insurance, etc.

What is Serotype 2 Dengue?

Note4Students

From UPSC perspective, the following things are important :

Prelims level : Dengue

Mains level : NA

The Union Health Ministry has flagged the emerging challenge in 11 States across India of serotype 2 dengue, which it said is associated with “more cases and more complications” than other forms of the disease.

Try this PYQ from CSP 2015:

Q. 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?

(a) 1 only

(b) 2 only

(c) Both 1 and 2

(d) Neither 1 nor 2

 

Post your answers here!
2
Please leave a feedback on thisx

What is Dengue?

  • Dengue is a mosquito-borne viral infection, found in tropical and sub-tropical climates worldwide, mostly in urban and semi-urban areas.
  • It is transmitted by female mosquitoes mainly of the species Aedes aegypti and, to a lesser extent, Ae. albopictus.
  • These mosquitoes are also vectors of chikungunya, yellow fever and Zika viruses.
  • Dengue is widespread throughout the tropics, with local variations in risk influenced by rainfall, temperature, relative humidity and unplanned rapid urbanization.

Its transmission

  • The virus is transmitted to humans through the bites of infected female mosquitoes, primarily the Aedes aegypti
  • Other species within the Aedes genus can also act as vectors, but their contribution is secondary to Aedes aegypti.
  • Mosquitoes can become infected from people who are viremic with dengue.

Various serotypes

  • Dengue is caused by a virus of the Flaviviridae family and there are four distinct, but closely related, serotypes of the virus that cause dengue (DENV-1, DENV-2, DENV-3 and DENV-4).
  • Recovery from infection is believed to provide lifelong immunity against that serotype.
  • However, cross-immunity to the other serotypes after recovery is only partial and temporary.
  • Subsequent infections (secondary infection) by other serotypes increase the risk of developing severe dengue.

UPSC 2022 countdown has begun! Get your personal guidance plan now! (Click here)

Subscribe
Notify of
2 Comments
Oldest
Newest Most Voted
Inline Feedbacks
View all comments
biswajit mondal
biswajit mondal
1 month ago
Post your answers here!" Read more »

c

akshat singh tomar
akshat singh tomar
29 days ago
Post your answers here!" Read more »

c