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Rachel V Thomas

Sri Lanka Dengue Outbreak Nears 50,000 Cases: Prevention Tips You Need to Know

<span>Sri Lanka</span> has been battling <span><a href="https://www.healthandme.com/health/dengue">dengue</a></span> cases since the beginning of the year. According to the National Dengue Control Unit, the island nation reported a total of 47,530 cases and 29 dengue-related deaths as of June 22.

Health officials said cases jumped to 13,689 in June alone, up from 8,590 cases in May 2026. The deaths include five children.

Colombo district accounts for 21 per cent of the country's cases (9,983), while Gampaha district has reported 8,809 cases (18.53 per cent).

<h2>Dengue: What's Behind The Surge?</h2>

Sri Lanka has experienced large outbreaks in recent years, including in 2017, 2019 and 2023. In 2025, the country recorded a total of 51,000 cases. The 2026 outbreak is reportedly driven by the monsoons and the aftermath of Cyclone Ditwah, which ravaged the island nation in December last year.

“We noticed this increase after the cyclone,” Dr. Prashila Samaraweera, consultant community physician at the National Dengue Control Unit, told Reuters.

“A lot of debris was in our environment, so we noticed a lot of mosquito breeding places, and our entomological indices were high from that time,” she added.

Also read: <a href="https://www.healthandme.com/health-news/dengue-serotypes-shifting-in-young-adults-how-indias-indigenous-vaccine-could-help-prevent-severe-disease-article-154627273" data-type="tilCustomLink">Dengue Serotypes Shifting In Young Adults: How India's Indigenous Vaccine Could Help Prevent Severe Disease</a>

Schools, homes, construction sites and public buildings are being cleaned up during a special programme launched by Sri Lanka's health authorities and other public officials.

According to media reports, Sri Lanka is deploying the military to contain the spread of mosquito-borne <span>dengue fever</span>, as health authorities warned that hospitals are being overwhelmed with more than 1,000 admissions a day.

President Anura Kumara Dissanayake's office said army, navy and air force officers would join a special unit to identify and destroy mosquito breeding sites.

Dengue is a viral infection transmitted primarily by Aedes mosquitoes and is common in tropical and subtropical regions worldwide. Mild dengue causes high fever and flu-like symptoms. However, in some cases, it can progress to severe dengue, also known as dengue hemorrhagic fever, which may lead to serious bleeding, shock and death.

Dengue is considered the most prevalent viral infection transmitted by Aedes mosquitoes. More than 3.9 billion people across over 132 countries are at risk, with an estimated 96 million symptomatic cases and around 40,000 deaths annually worldwide.

From U-WIN Success To India's Dengue Vaccine, Immunization Expert Shares Roadmap

Symptoms usually appear 4–10 days after being bitten by an infected mosquito and may vary in severity. Common symptoms include:

<ul><li>High fever</li><li>Severe headache</li><li>Pain behind the eyes</li><li>Joint and muscle pain</li><li>Nausea and vomiting</li><li>Fatigue</li><li>Skin rashes appearing a few days after fever onset</li></ul>In severe cases, dengue may cause excessive bleeding, a sudden drop in blood pressure and organ complications.

Preventing dengue mainly involves reducing mosquito exposure and eliminating mosquito breeding sites. Effective preventive measures include:

<ul><li>Using insect repellents containing DEET</li><li>Wearing long-sleeved clothing, especially during dawn and dusk</li><li>Installing screens on windows and doors</li><li>Using mosquito nets while sleeping in endemic areas</li><li>Eliminating stagnant water in flower pots, gutters and containers</li><li>Using mosquito traps or insecticide-treated materials in mosquito-prone areas.</li></ul>

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Sri Lanka has been battling dengue cases since the beginning of the year. According to the National Dengue Control Unit, the island nation reported a total of 47,530 cases and 29 dengue-related deaths as of June 22.Health officials said cases jumped to 13,689 in June alone, up from 8,590 cases in May 2026. The deaths include five children.Colombo district accounts for 21 per cent of the country's cases (9,983), while Gampaha district has reported 8,809 cases (18.53 per cent).Dengue: What's Behind The Surge?Sri Lanka has experienced large outbreaks in recent years, including in 2017, 2019 and 2023. In 2025, the country recorded a total of 51,000 cases. The 2026 outbreak is reportedly driven by the monsoons and the aftermath of Cyclone Ditwah, which ravaged the island nation in December last year.“We noticed this increase after the cyclone,” Dr. Prashila Samaraweera, consultant community physician at the National Dengue Control Unit, told Reuters.“A lot of debris was in our environment, so we noticed a lot of mosquito breeding places, and our entomological indices were high from that time,” she added.Also read: Dengue Serotypes Shifting In Young Adults: How India's Indigenous Vaccine Could Help Prevent Severe DiseaseMeasures to Contain DengueSchools, homes, construction sites and public buildings are being cleaned up during a special programme launched by Sri Lanka's health authorities and other public officials.According to media reports, Sri Lanka is deploying the military to contain the spread of mosquito-borne dengue fever, as health authorities warned that hospitals are being overwhelmed with more than 1,000 admissions a day.President Anura Kumara Dissanayake's office said army, navy and air force officers would join a special unit to identify and destroy mosquito breeding sites.What Is Dengue?Dengue is a viral infection transmitted primarily by Aedes mosquitoes and is common in tropical and subtropical regions worldwide. Mild dengue causes high fever and flu-like symptoms. However, in some cases, it can progress to severe dengue, also known as dengue hemorrhagic fever, which may lead to serious bleeding, shock and death.Dengue is considered the most prevalent viral infection transmitted by Aedes mosquitoes. More than 3.9 billion people across over 132 countries are at risk, with an estimated 96 million symptomatic cases and around 40,000 deaths annually worldwide.   Symptoms of Dengue FeverSymptoms usually appear 4–10 days after being bitten by an infected mosquito and may vary in severity. Common symptoms include:High feverSevere headachePain behind the eyesJoint and muscle painNausea and vomitingFatigueSkin rashes appearing a few days after fever onsetIn severe cases, dengue may cause excessive bleeding, a sudden drop in blood pressure and organ complications.How to Prevent DenguePreventing dengue mainly involves reducing mosquito exposure and eliminating mosquito breeding sites. Effective preventive measures include:Using insect repellents containing DEETWearing long-sleeved clothing, especially during dawn and duskInstalling screens on windows and doorsUsing mosquito nets while sleeping in endemic areasEliminating stagnant water in flower pots, gutters and containersUsing mosquito traps or insecticide-treated materials in mosquito-prone areas.

sri lanka dengue outbreak nears 50,000 cases: prevention tips you need to know

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