What is the worst season for tsetse flies?

The worst season for tsetse flies typically occurs during the warm and wet months, which can vary by region but often includes the rainy season. During this time, the breeding conditions are optimal, leading to increased populations of these flies. Additionally, vegetation is lush, providing ample habitat for tsetse flies to thrive. Consequently, both livestock and humans are at a higher risk of trypanosomiasis, also known as sleeping sickness, during this period.