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Dengue is a mosquito-borne viral infection that affects millions of people every year, especially during the rainy and post-monsoon seasons. It is spread through the bite of infected Aedes aegypti mosquitoes, which are most active during the daytime. Early diagnosis and proper medical care can help prevent serious complications.
Dengue is a viral disease caused by the dengue virus (DENV). There are four different types (serotypes) of the virus: DENV-1, DENV-2, DENV-3, and DENV-4. A person can be infected more than once because infection with one serotype does not provide lifelong protection against the others.
Dengue is caused by the bite of an infected Aedes mosquito. The disease does not spread directly from person to person.
Symptoms usually appear 4 to 10 days after the bite of an infected mosquito.
Seek immediate medical attention if any of the following symptoms develop:
These may indicate severe dengue, which requires urgent hospital care.
Doctors may recommend the following tests:
Early testing helps confirm the diagnosis and monitor disease progression.
There is no specific antiviral treatment for dengue. Treatment focuses on relieving symptoms and preventing complications.
A nutritious and hydrating diet supports recovery.
Recommended foods include:
The best way to prevent dengue is to avoid mosquito bites and eliminate mosquito breeding sites.
Dengue vaccines are available in some countries for specific groups of people. Their use depends on local public health recommendations, age, previous dengue infection, and other factors. Vaccination policies vary by country, so consult a healthcare professional or local health authority for guidance.
Consult a doctor immediately if:
You are pregnant, elderly, or have chronic medical conditions and develop dengue symptoms.
No. Dengue does not spread directly from one person to another. It spreads through the bite of infected mosquitoes.
The fever usually lasts 2–7 days, but weakness may continue for several weeks.
Not necessarily. Doctors evaluate platelet count together with symptoms, bleeding, hydration status, and other blood test results.
Yes. People of all ages, including children, can develop dengue.
Yes. Because there are four dengue virus serotypes, a person can be infected more than once during their lifetime.
Dengue is a preventable disease, but it can become serious if warning signs are ignored. Recognizing the symptoms early, staying well hydrated, following your doctor's advice, and preventing mosquito breeding are the best ways to reduce the risk of severe illness. If you or a family member develops a high fever with severe body aches during dengue season, seek medical evaluation promptly.
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