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Can dengue be fatal?
Can a person recover from dengue fever?
What is severe dengue?
Unintentional injuries death rate by age group. Estimated annual number of deaths from dengue fever. Dengue is a debilitating disease of joint pain that is caused by the dengue virus and spread by bites from infected mosquitoes. It can also involve fever, headaches, and nausea.
- Overview
- Symptoms
- Diagnostics and Treatment
- Global Burden
- Transmission
- Risk Factors
- Prevention and Control
- Who Response
Dengue (break-bone fever) is a viral infection that spreads from mosquitoes to people. It is more common in tropical and subtropical climates. Most people who get dengue won’t have symptoms. But for those that do, the most common symptoms are high fever, headache, body aches, nausea and rash. Most will also get better in 1–2 weeks. Some people deve...
Most people with dengue have mild or no symptoms and will get better in 1–2 weeks. Rarely, dengue can be severe and lead to death. If symptoms occur, they usually begin 4–10 days after infection and last for 2–7 days. Symptoms may include: 1. high fever (40°C/104°F) 2. severe headache 3. pain behind the eyes 4. muscle and joint pains 5. nausea 6. v...
Most cases of dengue fever can be treated at home with pain medicine. Preventing mosquito bites is the best way to avoid getting dengue. There is no specific treatment for dengue. The focus is on treating pain symptoms. Acetaminophen (paracetamol) is often used to control pain. Non-steroidal anti-inflammatory drugs like ibuprofen and aspirin are av...
The incidence of dengue has grown dramatically around the world in recent decades, with cases reported to WHO increased from 505 430 cases in 2000 to 5.2 million in 2019. A vast majority of cases are asymptomatic or mild and self-managed, and hence the actual numbers of dengue cases are under-reported. Many cases are also misdiagnosed as other febr...
Transmission through the mosquito bite
The virus is transmitted to humans through the bites of infected female mosquitoes, primarily the Aedes aegypti mosquito. Other species within the Aedes genus can also act as vectors, but their contribution is secondary to Aedes aegypti. After feeding on a DENV-infected person, the virus replicates in the mosquito midgut before disseminating to secondary tissues, including the salivary glands. The time it takes from ingesting the virus to actual transmission to a new host is termed the extrin...
Human-to-mosquito transmission
Mosquitoes can become infected by people who are viremic with DENV. This can be someone who has a symptomatic dengue infection, someone who is yet to have a symptomatic infection (they are pre-symptomatic), but also people who show no signs of illness as well (they are asymptomatic). Human-to-mosquito transmission can occur up to 2 days before someone shows symptoms of the illness, and up to 2 days after the fever has resolved. The risk of mosquito infection is positively associated with high...
Maternal transmission
The primary mode of transmission of DENV between humans involves mosquito vectors. There is evidence however, of the possibility of maternal transmission (from a pregnant mother to her baby). At the same time, vertical transmission rates appear low, with the risk of vertical transmission seemingly linked to the timing of the dengue infection during the pregnancy. When a mother does have a DENV infection when she is pregnant, babies may suffer from pre-term birth, low birthweight, and fetal di...
Previous infection with DENV increases the risk of the individual developing severe dengue. Urbanization (especially unplanned), is associated with dengue transmission through multiple social and environmental factors: population density, human mobility, access to reliable water source, water storage practice etc. Community’s risks to dengue also d...
The mosquitoes that spread dengue are active during the day. Lower the risk of getting dengue by protecting yourself from mosquito bites by using: 1. clothes that cover as much of your body as possible 2. mosquito nets if sleeping during the day, ideally nets sprayed with insect repellent 3. window screens 4. mosquito repellents (containing DEET, P...
WHO responds to dengue in the following ways: 1. supports countries in the confirmation of outbreaks through its collaborating network of laboratories; 2. provides technical support and guidance to countries for the effective management of dengue outbreaks; 3. supports countries in improving their reporting systems and capture the true burden of th...
Current Data for 2024. Top of Page. Last Reviewed: February 9, 2024. Source: Centers for Disease Control and Prevention, National Center for Emerging and Zoonotic Infectious Diseases (NCEZID), Division of Vector-Borne Diseases (DVBD) Dengue viruses are spread to people through the bite of an infected Aedes species mosquito.
Apr 12, 2024 · Health Apr 12, 2024 2:42 PM EDT. Roughly 4.7 million people have been infected with dengue fever so far in 2024, an explosion of cases centered in Latin America and the Caribbean that experts...
- Laura Santhanam
Oct 5, 2022 · The severe form of dengue fever, also called dengue hemorrhagic fever, can cause serious bleeding, a sudden drop in blood pressure (shock) and death. Millions of cases of dengue infection occur worldwide each year. Dengue fever is most common in Southeast Asia, the western Pacific islands, Latin America and Africa.
Jun 6, 2022 · Research estimates that nearly 400 million people get infected with dengue each year, but most (about 80%) have no symptoms. Advertisement. Can you be immune to dengue fever? Yes, you can get immunity to a version of dengue virus once you’ve been infected with it.
May 18, 2022 · DATE: 07/31/2025. Dengue fever is a priority for NIAID. About 50 million cases occur each year worldwide, with 22,000 deaths, mostly in children.
