Dengue fever is a mosquito-borne viral disease that has rapidly spread in all regions of WHO in recent years. Transmitted by female mosquitoes mainly of the species Aedes. This mosquito also transmits chikungunya, yellow fever, and Zika infection.
As per Wikipedia Dengue virus is the cause of dengue fever. It is a mosquito-borne, single positive-stranded RNA virus of the family Flaviviridae; genus Flavivirus.
Symptoms of Dengue:
Fever, Bleeding; Pain behind the eyes, Weakness, Dehydration.
In some cases, Dengue infection is asymptomatic – persons do not exhibit symptoms. Those with symptoms get ill between 4 to 7 days after the bite. It includes a sudden high fever coming in separate waves, pain behind the eyes, muscle, joint, and bone pain, severe headache, and a skin rash with red spots. Treatment includes supportive care of symptoms. There is no antiviral treatment available.
The illness may progress to Dengue Hemorrhagic Fever (DHF). Symptoms include severe abdominal pain, vomiting, diarrhea, convulsions, bruising, and uncontrolled bleeding. High fever can last from 2 to 7 days. Complications can lead to circulatory system failure and shock, and can be fatal (also known as Dengue Shock Syndrome).
If you are infected with the same Dengue virus serotype you become immune to future infections. However, if you are infected subsequently with a different serotype, immunity wanes over time which increases the risk of developing Dengue Hemorrhagic Fever.
warning signs of dengue:
- Severe abdominal pain.
- Fever of 103 degree to 105 degree
- Persistent vomiting.
- Bleeding gums.
- Vomiting blood.
- Rapid breathing.
- Fatigue/ restlessness.
Treatment for Dengue Fever
There is no specific medicine to treat dengue infection. If you think you may have dengue fever, you should use pain relievers with acetaminophen (Paracetamol) and avoid medicines with aspirin, which could worsen bleeding. You should also rest, drink plenty of fluids, and see your doctor.
How Long Does Dengue Fever Last?
Symptoms can start anywhere from 4 days to 2 weeks after being bitten by an infected mosquito, and typically last for 2 to 7 days.
Taking a bath
during fever is not only relaxing but helps to lower down the body temperature. There are two types of fever baths. A sponge bath is for babies and young children who cannot bathe on their own. Water at room temperature can be used for giving a sponge bath.S
Dengue fever is caused by the bite of an Aedes Aegypti mosquito. … Aedes aegypti is a small, dark-colored mosquito that has white lyre-shaped markings and banded legs. The mosquito usually bites people indoors and lays eggs during the daytime in water that contains organic material like leaves, algae, etc. Dec
Dengue cases have been confirmed in Bangladesh. Recent cases have been reported from Chittagong, Barisal, Mymensingh, Kishoreganj, Netrakona, Jessore, Gaibandha, Jhenaidah, Sirajganj, and Pabna. Risk is present throughout the country and year-round with peak transmission during the monsoon season, from June to September.
Description of Dengue:
Dengue is a viral infection caused by four types of viruses (DENV-1, DENV-2, DENV-3, DENV-4). These viruses belong to the Flaviviridae family.
The viruses are transmitted through the bite of infected Aedes aegypti and Aedes albopictus female mosquitoes. They usually bite both indoors and outdoors during the daytime (from dawn to dusk). These mosquitoes thrive in areas with standing water, including puddles, water tanks, containers, and old tires. Lack of reliable sanitation and regular garbage collection also contribute to the spread of the mosquitoes.
Risk of Dengue
Risk of Dengue exists in tropical and subtropical areas of Central America, South America, Africa, Asia, and Oceania. All travelers are at risk during outbreaks. Long-term travelers and humanitarian workers going to areas where Dengue is endemic are at higher risk. Dengue occurs in urban and suburban settings with higher transmission rates happening during the rainy season.
Travelers should take meticulous measures to prevent mosquito bites during the daytime.
- Use a repellent containing 20%-30% DEET or 20% Picaridin on exposed skin. Re-apply according to manufacturer’s directions.
- Wear neutral-coloured (beige, light grey) clothing. If possible, wear long-sleeved, breathable garments.
- If available, pre-soak or spray outer layer clothing and gear with permethrin.
- Get rid of water containers around dwellings and ensure that door and window screens work properly.
- Apply sunscreen first followed by the repellent (preferably 20 minutes later).
A vaccine is available for people living in some Dengue endemic countries, but is not commercially available for travelers.
Dengue Fever viruses images, life cycle, and distribution maps: