Facts about Dengue

Dengue is an infectious disease or a viral infection and a tropical disease caused by the dengue virus, which is spread or transmitted by the female Aedes mosquitoes – Aedes aegypti and Aedes albopictus.

Altogether, there are four dengue virus serotypes- DENV-1, DENV-2, DENV-3 and DENV-4. These viruses belong to the family Flaviviridae and genus Flavivirus.

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Hence, here are a few interesting facts about Dengue.

Interesting Facts about Dengue


A single person can be infected with dengue fever more than once. If a person has a medical history of dengue fever before and is once again infected, then there is more risk of developing serious and life-threatening dengue hemorrhagic fever.


As per medical records, the symptoms of dengue fever usually differ from infants to children and also from those who have been infected for the first time.


Fatigue and headache followed by continuous vomiting, rashes on the skin, high fever, drop in blood pressure, pain or body aches are some of the co symptoms of a patient suffering from dengue viral fever.


The presence of the dengue virus is usually diagnosed through an antigen test and antibody test. The low blood cells count can also detect the presence of dengue fever in an individual.


Similar to other viral infections, dengue fever can also cause life-threatening complications if left untreated. The life-threatening complications of dengue fever include- pneumonia, swelling of the heart, etc.


The only mode of transmission of the dengue fever is a bite from the Aedes aegypti mosquitoes. The incubation period for this viral infection ranges between four and fourteen days after being bitten by the infected mosquitoes.


According to medical records, dengue fever is widely spread in both tropical and subtropical regions. It is a type of an endemic disease, which is predominant in urban locations of America, Africa, South East-Asia and Eastern Mediterranean.


Till date, there are no accurate vaccinations or medicines discovered to treat dengue viral infections. Therefore, it has been advised by all doctors and medical advisors to take proper precautions and other safety measures by avoiding contact with the infected person, maintain hygiene, stay healthy, use mosquito repellents inside the home and cover your skin by wearing long and full clothes to prevent mosquito bites and to follow other necessary precautions advised by the doctors.


According to the WHO, more than six million patients die because of vector-borne diseases. Dengue is also one of the dreadful vector-borne diseases, which constitute about 15 to 16 percent of the infectious diseases in the world. The world’s poverty population living in the regions of the tropical and the subtropical areas are highly affected by such type of vector-borne diseases.


As per the saying “prevention is better than the cure” and there is no particular vaccination available to cure this dreadful viral disease, it’s better to take safety measures by using mosquito repellents, spraying insecticide and by keeping our surroundings clean and tidy.

Also Refer: vaccination

This article concludes an introduction to dengue fever, along with its amazing facts. To know more about dengue fever, its symptoms, precautions, safety measures, important questions and other related topics, keep visiting our website at BYJU’S Biology.

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