Professor James Logan from the London School of Hygiene and Tropical Medicine explains that DEET, the chemical used in many repellents, confuses the insects' sense of smell, making it difficult to recognise humans.
The agency also suggested that all travelers take steps to prevent insect bites, such as using repellents and wearing long-sleeved shirts and long pants.
The best way to prevent infections is using insect repellant with DEET, wearing thick long sleeve shirts and long pants and staying inside, in screened, air-conditioned areas as much as possible.
You bring a bug spray to keep the mosquitoes away because when you go hiking, there may be lots of insects and you don't want to be bitten by mosquitoes.
Small but essential: Don't forget a flashlight or headlight, batteries, a lighter (for a campfire), a first aid kit, bug repellent, sunscreen, and extra clothing.
The agency also suggested that all travelers take steps to prevent insect bites, such as using insect repellents and wearing long-sleeved shirts and long pants.
So, as well as using repellents and insecticides, thinking about our clothing, reducing our sweat, and changing what we eat and drink could help to reduce the risk of mosquito bites.