- Dengue is a mosquito-borne viral infection.
- Dengue virus 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 found in tropical and sub-tropical climates worldwide, mostly in urban and semi-urban areas.
- The virus responsible for causing dengue is called dengue virus (DENV) which belongs to the Flaviviridae family. There are four DENV serotypes, meaning that it is possible to be infected four times.
Signs and symptoms
- Dengue is a severe, flu-like illness that affects infants, young children and adults, but seldom causes death.
- Symptoms usually last for 2–7 days, after an incubation period of 4–10 days after the bite from an infected mosquito.
- There is no specific treatment for dengue fever.
- Fever reducers and pain killers can be taken to control the symptoms of muscle aches and pains, and fever.
- In 2021, India reported 110,473 dengue cases, ranking fourth among the worst-affected nations.
Why in News?
- Union Minister of Health and Family Welfare, Dr. Mansukh Mandaviya chaired a high-level meeting to review the Dengue situation in India and preparedness of public health system for prevention, containment and management of Dengue in view of the recent spike in cases of Dengue across the country.