daily-life
Updated 2026-06-19 5 min
In short
- ●Review of 25 clinical trials on the effectiveness of insecticide-treated nets.
- ●Mosquito nets reduce malaria cases by 20% even in resistance areas.
- ●In Cambodia, malaria remains present in forested and rural areas.
- ●Expats can continue to rely on mosquito nets as a protective measure.
25
Clinical trials analyzed
20%
Case reduction
Africa and Asia
Regions covered
Cambodianess
Source
Key Facts at a Glance
- 25 clinical trials. A systematic review analyzed the effectiveness of insecticide-treated nets in several countries.
- Growing resistance. Mosquitoes are developing resistance to insecticides, but nets remain effective.
- 20% reduction. Even in resistance areas, nets reduce malaria cases.
- Protection maintained. Nets continue to save lives and prevent infections.
- Reassuring for expats. In Cambodia, where malaria is present, this study confirms the usefulness of nets.
How It Happened
The study was conducted over several years, compiling data from 25 clinical trials in Africa and Asia. Here are the key steps:
- 2015-2020: Data collection from 25 randomized clinical trials.
- 2021-2024: Analysis of results, taking into account mosquito resistance.
- 2025: Publication of preliminary results in scientific journals.
- June 2026: The study is reported by Cambodianess, confirming the effectiveness of nets.
- 2026 and beyond: International health recommendations maintain the use of nets.
Breakdown
The study covers several regions and types of nets. Here is the data breakdown:
| Segment | Number | Detail |
|---|---|---|
| Sub-Saharan Africa | 18 trials | 22% case reduction despite high resistance. |
| Southeast Asia | 5 trials | 18% case reduction (including Cambodia). |
| Other regions | 2 trials | Similar results, evidence of overall effectiveness. |
| Standard nets | 15 trials | Effectiveness maintained with conventional insecticides. |
| Dual-insecticide nets | 10 trials | Better protection in high-resistance areas. |
What This Means for Siem Reap
- Mosquito nets remain a reliable protection against malaria in rural and forested areas around Siem Reap.
- Expats can continue to use treated nets without fear of inefficacy due to resistance.
- Cambodian health authorities maintain their net distribution programs.
- Travelers and digital nomads can trust nets in accommodations, even during the rainy season.
- This study reinforces the importance of combining nets with other measures (repellents, long clothing).
How to Stay Safe
- Use a treated net. Make sure it is in good condition and properly installed.
- Apply skin repellent. Use a product containing DEET or icaridin, especially in the evening.
- Wear long clothing. Cover arms and legs at dusk and night.
- Sleep under a net. Even if the room is air-conditioned, the risk of bites exists.
- See a doctor if you have a fever. Malaria can be treated quickly if detected early.
- Learn about risk areas. Check with local authorities or your embassy.
- Follow health recommendations. Respect net distribution campaigns.
Frequently asked questions
Are mosquito nets still effective in Cambodia?
Yes, the study shows they reduce malaria cases by 20% even in resistance areas. In Cambodia, they remain an essential protective measure.
What type of net is recommended?
Long-lasting insecticidal nets are the most effective. In high-resistance areas, dual-insecticide models offer better protection.
Where can I get a mosquito net in Siem Reap?
You can buy them at pharmacies, supermarkets, or outdoor equipment stores. Local NGOs sometimes distribute them for free.
Is malaria common in Siem Reap?
The risk is low in the city center but higher in rural and forested areas, especially around temples and in neighboring provinces.
Should I take preventive medication?
Consult a doctor before your trip. Chemoprophylaxis may be recommended depending on the duration and type of stay.
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Published by
Siem Reap Hub
The community guide for expats and travelers in Siem Reap, Cambodia