How can I effectively protect myself from mosquito bites while outdoors to prevent the risk of contracting diseases such as malaria and dengue fever?

To effectively protect yourself from mosquito bites outdoors and prevent diseases like malaria and dengue fever, you can wear long sleeves and pants, use insect repellent containing DEET, stay in well-screened areas, and avoid being outside during peak mosquito activity times, such as dawn and dusk.