Every year, millions of people worldwide are affected by a mosquito-borne disease known as Dengue.

With the increase in global travel, urbanization, and climate change, the disease is spreading to new regions. Despite its growing prevalence, awareness about Dengue remains limited. In this article, we will delve into the details of Dengue, its symptoms, transmission, prevention, and treatment.

What is Dengue?

Dengue is an infectious disease caused by any one of four closely related dengue viruses (DENV 1-4). These viruses are transmitted to humans through the bite of an infected female mosquito, primarily the Aedes aegypti species, and to a lesser extent, Aedes albopictus.

Dengue is endemic in more than 100 countries, primarily in tropical and subtropical regions around the world, including Southeast Asia, the Western Pacific, the Eastern Mediterranean, the Americas, the Caribbean, and Africa. However, the disease is spreading to new areas, in part due to increased global travel and urbanization.

Dengue Symptoms

After an incubation period of 4 to 10 days, dengue infection can cause a wide range of symptoms, from mild to severe. The symptoms typically last 2 to 7 days.

Mild symptoms of dengue can be confused with other illnesses that cause fever, aches and pains, or a rash. The most common symptoms include:

• High fever (40°C/104°F)
• Severe headache
• Pain behind the eyes
• Muscle and joint pain
• Nausea, vomiting
• Swollen glands
• Rash

In severe cases, symptoms may progress to Dengue Hemorrhagic Fever or Dengue Shock Syndrome, which can be life-threatening. These symptoms may include:

• Severe abdominal pain
• Persistent vomiting
• Rapid breathing
• Bleeding gums
• Blood in vomit
• Fatigue, restlessness

Dengue Transmission

Dengue is primarily transmitted through the bite of an infected Aedes mosquito. These mosquitoes are typically active during early morning and late afternoon, but they can bite at any time during the day, especially indoors, in shady areas, or when the weather is cloudy.

Aedes mosquitoes become infected with the dengue virus when they bite a person infected with the virus. Infected mosquitoes can then spread the virus to other people through bites. It's important to note that direct person-to-person transmission of dengue does not occur.

Prevention and Control

Prevention and control of dengue primarily involves preventing mosquito bites and reducing mosquito habitats. This includes:

• Using insect repellent on exposed skin and clothing
• Wearing long-sleeved shirts and long pants, socks and shoes when mosquitoes are most active
• Using air conditioning or window/door screens to keep mosquitoes outside
• Reducing mosquito breeding sites around homes by emptying, covering, or treating any items that hold water, like tires, buckets, planters, toys, pools, birdbaths, flowerpots, or trash containers

Vaccines against dengue have been developed and are available in some countries for individuals aged 9-45 years who live in dengue-endemic areas. However, the vaccine is not fully protective and should be used in conjunction with other preventive measures.

Treatment

There is no specific treatment for dengue, but medical care can help manage symptoms. This includes staying hydrated, resting, and taking pain relievers with acetaminophen. Aspirin or nonsteroidal anti-inflammatory drugs (NSAIDs) should be avoided as they can increase the risk of bleeding.

In severe cases, hospital