Malaria risk in Nairobi

Malaria Prevention Guide for Nairobi Risk Score: 64/100

Malaria is a serious illness caused by parasites transmitted through the bite of infected female Anopheles mosquitoes. Symptoms include fever, chills, headache, body aches, and fatigue. Without treatment, it can become life-threatening.

Nairobi sits at about 1,700 meters elevation, which historically limited malaria transmission. However, the city now carries moderate risk due to several factors. Rapid urban expansion creates construction sites with standing water. Informal settlements often lack proper drainage and waste management, producing mosquito breeding sites. Climate changes have extended warm periods favorable to mosquitoes. Travel to higher-risk areas outside Nairobi is common among residents. The Aedes and Anopheles mosquitoes are both present in the city.

Here are five practical steps to protect yourself.

First, sleep under a long-lasting insecticide-treated bed net every night, even indoors. This single measure dramatically reduces mosquito bites during peak biting hours.

Second, apply DEET-based or picaridin insect repellent on exposed skin during evening and early morning hours when mosquitoes are most active.

Third, eliminate standing water around your home. Empty containers, cover water storage tanks, and clear blocked drains. Mosquitoes breed in even small amounts of stagnant water.

Fourth, wear long sleeves and pants during dusk and dawn when outdoors. Light-colored clothing is preferable as mosquitoes are attracted to dark colors.

Fifth, take antimalarial prophylaxis if traveling to high-risk areas outside Nairobi, and seek immediate medical attention if you develop fever within weeks of potential exposure. Nairobi hospitals can provide rapid diagnostic testing and effective treatment.

Remember that Nairobi risk varies by neighborhood and season. Stay informed through local health advisories and maintain consistent prevention habits year-round.