Dengue - what you should know

Dengue - what you should know

Dengue fever is a widespread and potentially life-threatening mosquito-borne viral disease affecting millions worldwide. Transmitted primarily by the Aedes mosquito, this illness can lead to severe complications if left untreated. Understanding the critical aspects of dengue is crucial for prevention, early detection, and appropriate management. This blog will delve into the essential information about dengue, its symptoms, causes, prevention, and treatment to help you stay informed and safeguard yourself and your community.

The Basics of Dengue:

What is Dengue?

Dengue is a viral infection caused by the dengue virus, which belongs to the Flaviviridae family. It exists in four distinct serotypes: DEN-1, DEN-2, DEN-3, and DEN-4. Once infected with one serotype, a person becomes immune to that specific serotype but not to the others, making repeated infections possible.

How is Dengue Transmitted?

The Aedes mosquito, mainly Aedes aegypti and Aedes albopictus, are the primary vectors responsible for transmitting dengue. When a mosquito bites a dengue-infected person, it becomes a carrier of the virus. Subsequently, when the infected mosquito bites another person, the virus is transmitted, initiating the infection.

Recognizing Dengue Symptoms:

Dengue fever is a mosquito-borne viral infection caused by the dengue virus, and its symptoms can vary depending on the severity of the disease. After being bitten by an infected mosquito, the incubation period is usually 4 to 10 days before symptoms appear. Common dengue symptoms include:

  • High Fever: Sudden onset of high fever, often reaching 104°F (40°C) or higher, is one of the hallmark symptoms of dengue.

  • Severe Headache: Intense headaches, which can be debilitating, are commonly experienced by dengue patients.

  • Pain and Muscle Aches: Severe joint and muscle pain, often called "breakbone fever," is a typical symptom of dengue.

  • Fatigue and Weakness: Dengue fever can cause extreme fatigue and weakness, reducing energy levels.

  • Nausea and Vomiting: Nausea, vomiting, and loss of appetite are common gastrointestinal symptoms associated with dengue.

  • Skin Rash: Some individuals may develop a rash on the skin, which can be itchy and may appear a few days after the onset of fever.

  • Pain Behind the Eyes: Dengue can cause eye pain, especially when moving the eyes.

  • Bleeding: In severe cases, dengue can lead to bleeding manifestations, such as nosebleeds, bleeding gums, or easy bruising.

It is important to note that dengue can be either mild or severe. Severe dengue, or dengue hemorrhagic fever (DHF) or dengue shock syndrome (DSS), is a life-threatening condition characterized by bleeding, organ failure, and dangerously low blood pressure. Warning signs of severe dengue include severe abdominal pain, persistent vomiting, rapid breathing, restlessness, and decreased platelet count.

Suppose someone exhibits dengue symptoms or warning signs. In that case, they should seek immediate medical attention, as early diagnosis and proper medical care are crucial to manage the disease effectively and prevent complications.

Dengue Diagnosis and Treatment:

Diagnosis of Dengue:

Diagnosing dengue involves a combination of clinical evaluation, medical history, and specific laboratory tests. Since dengue shares symptoms with other viral illnesses, it's essential to confirm the presence of the dengue virus to provide appropriate treatment. The following methods are used in the diagnosis of dengue:

Clinical Assessment: Healthcare professionals examine the patient's symptoms, medical history, and recent travel history to dengue-endemic areas.

Blood Tests: Blood tests are essential for confirming dengue infection. Two types of blood tests are commonly used:

NS1 Antigen Test: This test detects the presence of the dengue virus protein (NS1) in the blood during the early stages of infection.

Dengue Antibody Tests: These tests detect antibodies produced by the immune system in response to the dengue virus. The IgM and IgG antibodies are tested at different stages of infection to determine if it is a recent or previous infection.

Complete Blood Count (CBC): A CBC helps monitor changes in the number of blood cells, including platelets, which tend to decrease in dengue infections.

Treatment of Dengue:

Currently, there is no specific antiviral treatment for dengue. Treatment mainly focuses on managing symptoms and preventing complications. The following measures are commonly employed for dengue treatment:

  • Hydration: Adequate hydration is crucial to prevent dehydration, especially if the patient experiences high fever and vomiting. Oral rehydration solutions or intravenous fluids may be administered if necessary.

  • Pain Relief: Over-the-counter pain relievers like acetaminophen (paracetamol) reduce fever and relieve pain and discomfort. Aspirin and non-steroidal anti-inflammatory drugs (NSAIDs) should be avoided, as they can increase the risk of bleeding.

  • Rest and Monitoring: Patients with dengue are advised to rest and avoid strenuous activities. Regular monitoring of vital signs and blood tests is essential to detect any signs of complications.

  • Hospitalization (Severe Cases): Severe dengue cases may require hospitalization for close monitoring and supportive care, including intravenous fluids and blood transfusions if necessary.

  • Platelet Transfusions: Platelet transfusions may be administered in severe cases with significantly low platelet counts and bleeding.

Prevention plays a crucial role in controlling dengue. Preventive measures include mosquito control efforts, using mosquito repellents, wearing protective clothing, and eliminating mosquito breeding sites. Research advances dengue treatment options, and vaccine development is ongoing to provide adequate protection against the disease.

If you suspect dengue or experience dengue-like symptoms, seeking medical attention promptly for proper diagnosis and management is essential. Early detection and supportive care significantly improve the outcome for individuals affected by dengue fever.

Prevention and Control:

  • Mosquito Control Preventing mosquito breeding is the most effective way to control dengue transmission. Eliminate standing water in and around your home, as stagnant water is a breeding ground for mosquitoes. Use mosquito nets and screens, and wear long-sleeved clothing and mosquito repellents outdoors.

  • Community Involvement Engaging the community in dengue prevention efforts is critical. Local authorities, healthcare providers, and citizens must work together to raise awareness, conduct clean-up drives, and implement mosquito control measures.

  • Travel Precautions If you plan to travel to dengue-endemic areas, take extra precautions. Stay in accommodations with screened windows or air conditioning, use mosquito nets, and apply insect repellents with DEET or other recommended ingredients.

Dengue Vaccines:

  • Vaccine Development Efforts to develop effective dengue vaccines have been ongoing for several years. Some vaccines have been approved in certain countries and have shown promising results in reducing the severity of the disease.

  • Vaccine Availability The availability of dengue vaccines may vary depending on your location. Consult your healthcare provider or local health department to inquire about vaccine options and eligibility.


Dengue is a significant global health concern that requires awareness, prevention, and early detection to mitigate its impact. By understanding the basics of dengue, recognizing its symptoms, and taking necessary precautions, you can contribute to controlling the spread of this disease. Together, we can work towards creating a dengue-free world where everyone can thrive without fear of this viral menace. Stay informed, stay safe, and let's combat dengue as a united front.

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Frequently Asked Questions

What are the symptoms of Dengue fever?

The symptoms of dengue fever can vary from mild to severe and typically appear 4 to 10 days after being bitten by an infected mosquito. Common symptoms include high fever, severe headache, muscle and joint pain, fatigue, nausea, vomiting, and a skin rash. In extreme cases, individuals may experience dengue hemorrhagic fever (DHF) or dengue shock syndrome (DSS), characterized by bleeding, organ failure, and dangerously low blood pressure.

How is Dengue fever diagnosed?

Dengue fever can be diagnosed through various methods, including:

  • Blood Tests: Blood tests can detect the presence of the dengue virus or antibodies to the virus, helping confirm the diagnosis.

  • Polymerase Chain Reaction (PCR): PCR tests can identify the virus's genetic material in the blood, aiding in early detection.

  • Serology: Serological tests can detect antibodies the immune system produces in response to the virus.

  • Early and accurate diagnosis is crucial for timely medical intervention and appropriate care.

Is there any specific treatment for Dengue fever?

As of now, there is no specific antiviral treatment for dengue fever. Medical care primarily focuses on managing the symptoms and providing supportive care. Adequate hydration is essential to offset fluid loss due to fever and vomiting. Over-the-counter pain relievers like acetaminophen can help alleviate pain and reduce fever. However, aspirin and non-steroidal anti-inflammatory drugs (NSAIDs) should be avoided, as they can increase the risk of bleeding.

How can Dengue fever be prevented?

Preventing dengue involves various measures, such as:

  • Mosquito Control: Eliminating stagnant water where mosquitoes breed, using mosquito nets and screens, and applying insect repellents can help reduce mosquito exposure.

  • Community Involvement: Engaging the community in clean-up drives and mosquito control efforts can effectively control mosquito populations.

  • Travel Precautions: When travelling to dengue-endemic areas, take precautions such as using mosquito nets and repellents.

Are there any vaccines available for Dengue fever?

Yes, some countries have approved dengue vaccines. These vaccines aim to reduce the severity of the disease and offer protection against specific dengue virus serotypes. However, vaccine availability may vary depending on your location, and it's essential to consult with healthcare providers to determine vaccine options and eligibility.

Can you get Dengue fever more than once?

Yes, it is possible to get dengue fever multiple times. Once infected with one dengue virus serotype, a person becomes immune to that specific serotype but not others. Subsequent infections with different serotypes can occur and may sometimes lead to severe dengue.