Editorial on rise in Dengue cases in Ludhiana.

 Ludhiana holds the dubious distinction of recording the maximum dengue cases this year(2019).

• Around 8956 cases have been recorded this year in Punjab.
• In 2017, more than 14000 cases were recorded across the state.

 Health experts have lamented that all four strains of Dengue are present in the state of Punjab. These strains are:-

1. DENV-1
2. DENV-2
3. DENV-3
4. DENV-4.

• It is being said by the experts that herd immunity can be developed against all the four strains of Dengue in the course of 3 to 5 years.
• Though, a significant drop in dengue cases has been seen.( Around 39-35%).
• Ludhiana has recorded around 1286 cases of dengue this year, which is a great increase in the region.
• Gurdaspur has also witnessed an increase in the number of dengue cases.

About Dengue:-

• 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.
• Dengue is caused by a virus of the Flaviviridae family.

(Source:- The Tribune)

Question:- Explain the cause of the rise in Dengue virus.

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