Facts About Dengue


Approximately, there are 100 million dengue fever cases that transpire around the world. Most tropical areas are highly liable to these dengue fever cases. Such areas are located in the Southeast Asia, Pacific Islands, Africa, Central and South America and the subcontinent of India. Other cases happen because of traveling abroad. People who travel abroad and get caught of the dengue virus which comes from areas that are prone to dengue cases increase in number in the United States. Dengue fever is caused by dengue viruses which are mosquito-borne and transmitted by the stings of mosquitoes that are infected with a dengue virus.

Signs of dengue fever include high fever, muscle pains, nausea, vomiting, severe headaches, bleeding and skin rash. In some cases, these symptoms are underestimated by people. People tend to relate these symptoms only with viral infections or ordinary flu. Unfortunately, people who have weaker immune systems are prone to a more serious form of dengue fever. This rare complication is referred to as the dengue hemorrhagic fever which can cause serious bleeding, damage to blood vessels, enlargement of liver and malfunction of the circulatory system. This complication may lead to dengue shock syndrome (DSS) which may cause death.

Hence, if these symptoms are showing up, it is advised to consult the physicians immediately. With an early treatment, it can prevent serious complication that can cause to death. Most people do not give much importance to symptoms because they thought it’s just a normal fever. People should be knowledgeable with dengue so that they are aware with the symptoms and treatments.

More than 100 million cases of dengue are reported around the world
More than 100 million cases of dengue are reported around the world

Image by European Vaccine Initiative


Geographic Area That Are High Risk for Contracting Dengue Fever

 Dengue outbreak is predominant in tropics and subtropics areas. This condition has recently occurred in Caribbean including Cuba, Central America, Puerto Rico, and the U.S Virgin Islands. Today, dengue is considered to be the leading cause of acute febrile illness in United States travelers coming from Asia, Caribbean and South America. In addition with this, dengue virus has been transmitted via tourists returning from areas with prevalent dengue, including Singapore, Southeast Asia, the South Pacific, India, Tahiti, West Indies, and the Middle East.

As of October 2013, Thailand with 126 deaths and 135, 344 people infected with dengue virus was considered to have the worst outbreak in 20 years.

Countries such as Columbia, Mexico, Puerto Rico, El Salvador, Bolivia, Peru, Brazil, Venezuela and Honduras were reported to have huge number of dengue cases in the year 2011.

During the year 2011, Paraguay had a dengue fever outbreak but the worst was in 2007. That moment, hospitals were overcrowded and patients had elective surgeries cancelled due to the outbreak.

According to U.S. Centers for Disease Control and Prevention (CDC), no cases of dengue developed in the continental United States from 1946 to 1980. Since 1980, only few are reported to have dengue fever. They also added that an estimation of 100 million cases of dengue fever with several hundred thousand cases of dengue hemorrhagic fever requires hospitalization each year. Statistics showed 40% of the world’s population lives in an endemic with dengue. In particular, 22, 000 deaths happen yearly and patients are mostly children.

It depicts places that are affected by dengue
It depicts places that are affected by dengue

Image by World Health Organization


Dengue Key Facts

Dengue condition is a mosquito-borne disease which can be found in tropical and sub-tropical regions around the world mainly in urban and semi-urban areas. In today’s time, dengue has become a main international public health concern. Around 1950, severe dengue also called as Dengue Haemorrhagic Fever was first recognized in the Philippines and Thailand. Nowadays, most Asian and Latin American countries are affected by severe dengue which cause the death and serious illness of children in these countries.

For the past decades, the number of dengue rates has increase significantly around the world. More than 2.5 billion people are at risk of dengue. According to the World Health Organization, about 50-100 million people are infected of dengue every year. Approximately 500,000 people with severe dengue need hospitalization every year and large portion of whom are children. Today, dengue is prevalent in more than 100 countries.

Dengue fever is a severe, flu-like sickness which affects infants, young children and adults but rarely causes death. Symptoms of dengue are having high fever, severe headache, muscle and joints pain, vomiting, pain behind the eyes, swollen glands. These symptoms generally last for 2-7 days, after an incubation period of 4-10 days after the bite from an infected mosquito.

Basically, severe dengue fever is a deadly complication because of fluid accumulation, plasma leaking, severe bleeding, respiratory distress or organ impairment. Warning signs usually happen 3-7 days after the first symptoms in combination with low temperature and include, bleeding gums, persistent vomiting, severe abdominal pain, fatigue, blood in vomit, restlessness and rapid bleeding. For the next 24-48 hours of the serious stage can be deadly hence proper and right medication is required to prevent complications and risk of death.


One of symptoms of dengue is vomiting.
One of symptoms of dengue is vomiting.

Image by Aditi in Herbal Remedy


Causes of Dengue Fever

Nowadays, the number of people affected by dengue is soaring very rapidly. But the million dollar question is what cause dengue fever? Where did dengue come from? People should be educated in to where dengue originated.

Dengue fever is transmitted through infected mosquitoes which are usually the Aedes aegypti and albopictus varieties. The spread of this condition happens in a cycle. When an infected person is bitten by the mosquito, the infected insect then bites another person, and the sequence goes on.

These kinds of mosquitoes usually bit during the day, most often near the beginning of the day, or in the night before sunset. Generally, these insects can be found in stagnant water near humans such as swimming pools, old car tires, containers near building sites or other useless human waste which allows albopictus mosquitoes to breed.

Most cases of dengue occur in countries with poor sanitation. These countries are in South East Asia, Africa, Australia, South America, the Pacific Islands, and Indian Subcontinent.

Four different strains of dengue virus are DEN 1, DEN 2, DEN 3, and DEN 4. When a person is infected by any of these strains, he should develop life-long immunity against that strain. In line with this, if the person is contaminated by a different strain, he has higher possibility of developing more serious sickness, such as severe dengue. However, higher risk can still be nullified if the person is infected with a third or fourth strain.

One reason for the wide spread of this virus is the growing population and increase in global travel.

Stagnant water causes dengue
Stagnant water causes dengue

Image by Parasite