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Apr 13, 2023 · COVID-19. Dengue is caused by one of any of four related viruses: Dengue virus 1, 2, 3, and 4. For this reason, a person can be infected with a dengue virus multiple times in their life. Coronavirus disease 2019 or COVID-19 is a respiratory illness caused by a coronavirus called SARS-CoV-2.
Jun 24, 2020 · Most people with dengue and COVID-19 have mild illness and can recover at home; symptoms usually last a few days, and people tend to feel better after a week. However, both dengue and COVID-19 can cause severe illness that can result in death.
Dec 21, 2023 · During the COVID-19 pandemic we saw moderate transmission of dengue in some regions and low transmission in others leading to an accumulation of people without immunity to certain dengue virus serotypes.
- 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...
Jul 9, 2021 · In tropical countries, dengue virus infection is a public health problem because of the hyperendemicity of four virus serotypes and their effects on human health. 1 During the first 4 weeks of 2020, in the region of the Americas, 125,514 dengue cases were reported (12.86 cases per 100,000 population), including 27 deaths and 498 severe dengue ca...
- Fernando Rosso, Luis G. Parra-Lara, Olga L. Agudelo-Rojas, Diana M. Martinez-Ruiz
- 10.4269/ajtmh.20-0912
- 2021
- Am J Trop Med Hyg. 2021 Sep; 105(3): 745-750.
Aug 2, 2021 · COVID-19 and dengue co-infection was associated with severe disease and fatal outcomes. The correct diagnosis and treatment of co-infection poses a substantial challenge due to the overlapping clinical and laboratory parameters.
Nov 4, 2020 · Dengue is transmitted to humans through the bite of certain species of Aedes mosquitos that carry one of the virus’s four serotypes: dengue viruses 1–4. These mosquitos mostly inhabit...
