There’s a high risk of malaria in Kenya at altitudes below 2,500 m (8,202 ft). In the city of Nairobi and in the highlands above these altitudes, there’s a low risk of malaria. Visit your doctor to discuss antimalarial medication.
The best way to reduce your risk of catching malaria is to avoid mosquito bites. Wear long, loose clothing that covers your arms and legs, apply a repellent with 50% DEET to exposed skin, and use a mosquito net if sleeping in an unscreened room.