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Is it possible to be infected with dengue virus but have no symptoms?

Dengue fever is a painful, debilitating mosquito-borne disease caused by any one of four closely related dengue viruses. Dengue fever is transmitted by the bite of an Aedes mosquito infected with a dengue virus. The mosquito becomes infected when it bites a person with dengue virus in their blood. It can’t be spread directly from one person to another person.

The mosquito becomes infected with the dengue virus when it bites a person who has dengue virus in their blood. The person can either have symptoms of dengue fever or DHF, or they may have no symptoms. After about one week, the mosquito can then transmit the virus while biting a healthy person.

Dengue virus infects 390 million people worldwide each year through the bite of mosquitoes of the Aedes genus. But estimates suggest that 300 million of these people do not present clinical symptoms that are severe enough to be detected by healthcare systems.

Symptoms associated with Dengue:

 It was previously thought that these asymptomatic or mildly symptomatic infections did not reach a high enough level of viremia (the concentration of the virus in the blood) to infect mosquitoes.

Symptoms include fever, headache, nausea, vomiting, rash, and pain in the eyes, joints, and muscles. Dengue fever causes a high fever of 104 F degrees and at least two of the following symptoms: Headache Muscle, Bone, and Joint Pain.

Quarantine for Dengue Patients:

  • After you are bitten by an infected mosquito, symptoms can take up to 2 weeks to develop but usually end in a week.
  • The scientists performed blood tests on people living in close proximity in the same household or in the immediate neighborhood to patients with confirmed symptomatic dengue.
  • People who tested positive for dengue virus in their blood tests but without clinical symptoms were then put into contact with healthy laboratory-bred mosquitoes.
  • Subsequent analysis of the mosquitoes confirmed they had been infected and would be capable of transmitting the virus the next time they bit a human.
  • Most of the people especially children and teens may experience no signs or symptoms during a mild case of dengue