Dengue Virus – Transmission, Symptoms, Concerns and The Facts That We Should Know

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Dengue Virus is one of the most well known Mosquito-borne viruses. The word Dengue has strike fear to many and we have good reason to fear its existence.

Dengue Virus had infected more than 100 countries. It alone has cause the death of more than 10,000 individuals each year, mainly in the less developed countries.

Dengue virus can be quite life-threatening, and is a major concern by many health authorities to monitor and control its spread.

40 to 80 percent of the infections are asymptomatic, which means not developing any symptoms for the disease. While the effects of its symptoms can vary between individuals. The symptoms can range from mild to very serious and in some extreme cases causing death.

Let’s try to understand more about this virus and see how we can protect ourselves from it.

Dengue Virus, Dengue Fever - www-health-sg-com

Transmission through:

  • Female Mosquitoes (Aedes aegypti, Aedes albopitus)
  • Blood transfusion
  • Pregnancy from mother to fetus

dengue virus

Main symptoms:

  • High Grade Fever (more than 38.5 degrees Celsius)
  • Server Headache
  • Muscle / Joint Pain
  • Rashes (Skin maculopapular rash)
  • Itching
  • Red Eyes
  • Pain behind eyes (reto-orbital pain)
  • Fatigue
  • Weakness
  • Nausea
  • Loss of appetite

Other less common symptoms:

  • Vomiting
  • Abdominal pain
  • Hypotension
  • Breathing difficulty

3 to 14 days is the time it takes for any symptoms to be developed after the bite from the mosquitoes. On average the symptoms persist for on average 4 to 7 days.

dengue virus -

The Concern:

Dengue have 4 different strains (DEN 1, DEN 2, DEN 3 and DEN 4). Recovery from one of the strains of Dengue Virus does not give you immunity from the other strains of the virus. Instead, secondary infection of other strain of the dengue virus may post a higher risk of the individual to develop hemorrhagic fever (DSS-dengue shock syndrome); a rare complication that cause massive bleeding, shock and death to the individual within 24 hrs if left untreated.

Hemorrhagic fever is believed to be of higher risk to people who are immune compromised or have subsequent dengue infection.


On the flip-side:

First infection of dengue fever on a healthy individual usually allows the person to make full recovery without any major complications.  In addition, the individual will be immune to that particular strain of Dengue Virus.



Do see a doctor immediately if you suspect that you are infected with Dengue Virus, it may save your lives.

Prevention is always the key in protecting you and your loved ones from the virus. Here are some simple ways you will need to know.



Public Health Agency of Canada- Dengue

National Environmental Agency of Singapore – Dengue

World Health Organisation – Dengue

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