You’ve been dreaming of witnessing the breathtaking sunrise at Angkor Wat, the largest religious structure in the world. As the first rays of light illuminate the ancient temple, it’s a sight to behold—but lurking in the serene morning air are mosquitoes that could carry dengue fever. How can you safeguard yourself and ensure these tiny pests don’t turn your dream trip to Cambodia into a nightmare?
What is Dengue Fever?
Dengue fever is a mosquito-borne viral infection primarily transmitted by Aedes aegypti and Aedes albopictus mosquitoes(1). These mosquitoes also transmit Chikungunya and they are most active during the day, with peak activity occurring in the early morning and late afternoon(1).
Where is Dengue Fever Found Besides Cambodia?
Dengue fever is most common in tropical and subtropical regions of the world(1). While it can occur in many countries, it is especially prevalent in parts of(1):
- Southeast Asia
- Central and South America
- Caribbean
- Africa
- Pacific Islands
In Cambodia, dengue is a known health risk, particularly during the rainy season when mosquito breeding grounds are abundant(1).
Do You Always Get Sick from Dengue?
Not everyone who contracts dengue fever will experience symptoms. In fact, 40-80% of people infected with the virus may remain asymptomatic, meaning they won’t show any obvious signs of illness(1). However, those who do experience symptoms often deal with fever and discomfort and usually last for 2 to 7 days(2).
When to Worry:
Though most cases of dengue fever are mild, a small percentage (less than or equal to 5%) of individuals may develop severe forms of the illness, known as severe dengue (also called dengue hemorrhagic fever or dengue shock syndrome), which can be fatal if not treated promptly(1).
Recognizing the Symptoms of Dengue Fever
Common Symptoms:
If you’re experiencing symptoms, they typically appear 4-10 days after being bitten by an infected mosquito(2):
- High fever (often above 104°F or 40°C)
- Severe headache
- Pain behind the eyes
- Muscle and joint aches (often referred to as “breakbone fever”)
- Nausea and vomiting
- Skin rash (can appear a few days after fever)
Warning Signs of Severe Dengue:
In some cases especially for those infected a second time, dengue can escalate quickly into a more serious condition. Watch out for these warning signs and seek medical help immediately:
- Severe abdominal pain
- Persistent vomiting
- Difficulty rapid breathing
- Bleeding gums or nose
- Restlessness or confusion
- Feeling weak and tired
How to Protect Yourself from Dengue While Traveling in Cambodia
Stay safe from dengue fever by following these simple tips(3):
- Use Mosquito Repellent: Choose repellents with DEET or picaridin for effective protection.
- Wear Protective Clothing: Cover up with long sleeves, pants, and socks, especially during peak mosquito activity times.
- Sleep Smart: Use mosquito nets or stay in accommodations with air conditioning and window screens.
- Avoid Standing Water: Mosquitoes breed in stagnant water—steer clear of areas with open containers, puddles, or pools.
No vaccine is currently available in Canada. One vaccine was available in US for age 9 to 16 years with previous dengue virus infection but it is being discontinued and remaining supplies expire in 2026(4).
What to Do If You Suspect You Have Dengue Fever
If you believe you may have contracted dengue fever during your trip, it’s important to act quickly. Here’s what you need to do:
Immediate Steps(1):
- Seek Medical Attention: Visit a healthcare provider in Cambodia as soon as you experience symptoms.
- Hydrate: Drink plenty of fluids to stay hydrated, as dehydration is a common issue with dengue fever.
- Avoid Certain Medications: Do not take aspirin or ibuprofen, as they can worsen bleeding tendencies. Stick to acetaminophen (Tylenol) for pain relief, unless otherwise directed by a doctor.
- Rest and Recover: Get plenty of rest to help your body fight the infection.
FAQs About Dengue Fever in Cambodia
Is Dengue Fever Common in Cambodia?
Yes, dengue fever is common in Cambodia, especially during the rainy season. Travelers should be aware of the risk, particularly in areas with stagnant water or heavy rainfall.
How Can I Avoid Dengue Fever in Thailand?
- Use mosquito repellent regularly (DEET-based products work well).
- Wear long sleeves and pants, especially in rural areas.
- Stay in accommodations with mosquito nets, screens, or air conditioning.
- Avoid peak mosquito activity times—early morning and late afternoon.
Can Dengue Fever Be Cured?
There is no specific cure for dengue fever, but the symptoms can be managed. Most people recover within 1-2 weeks, but severe dengue may require hospitalization and medical care.
Disclaimer
The information provided in this blog post is for informational purposes only and is not intended as medical advice, diagnosis, or treatment. Please consult a qualified healthcare professional or travel health clinic for personalized advice, especially if you are planning to visit Cambodia or any other region where dengue fever is prevalent.
Reference
(1) https://wwwnc.cdc.gov/travel/yellowbook/2024/infections-diseases/dengue
(2) https://www.who.int/news-room/fact-sheets/detail/dengue-and-severe-dengue
(4) https://publications.aap.org/aapnews/news/28617/AAP-CDC-working-to-vaccinate-children-in-Puerto
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