Zika Virus risk in Phnom Penh

Zika Virus Prevention Guide for Phnom Penh

Zika is a mosquito-borne viral infection transmitted primarily by Aedes aegypti mosquitoes, the same species active in Phnom Penh. While most infections are mild, Zika poses serious risks for pregnant women due to its link to microcephaly in newborns. Cambodia's tropical climate, urban density, and standing water create favorable conditions for mosquito breeding year-round.

Key Local Risk Factors in Phnom Penh:

1. Year-round warm temperatures support continuous mosquito activity.
2. Uncovered water storage containers in residential areas.
3. Dense urban neighborhoods with limited drainage.
4. Peak mosquito activity during early morning and late afternoon.

Prevention Steps:

1. Eliminate breeding sites. Empty, scrub, or cover all water containers weekly—buckets, flower pots, tires, and tanks. Mosquitoes breed in stagnant water within days.

2. Use EPA-registered insect repellent daily, especially from 6-10 AM and 4-6 PM. Apply DEET, picaridin, or oil of lemon eucalyptus on exposed skin and clothing.

3. Sleep under insecticide-treated bed nets, particularly in ground-floor residences near standing water or open windows.

4. Wear long sleeves and pants during outdoor activities in high-risk zones like Boeung Kak, Chbar Ampov, or riverside areas where water accumulates.

5. Pregnant women should avoid nonessential travel to Phnom Penh during active transmission periods (typically rainy season, May-October). Consult healthcare providers for testing if symptoms appear—fever, rash, joint pain, or conjunctivitis.

Local health clinics offer free mosquito nets and larvicide for water sources. Report persistent standing water to district offices for community spraying.

Risk Level: Moderate (61/100)—consistent vigilance reduces personal exposure significantly.