The percentage of districts reporting a microfilaria (MF) rate below 1% among targeted endemic districts is a key indicator in the fight against lymphatic filariasis. Microfilaria rate refers to the proportion of individuals in a population who test positive for microfilariae—the microscopic larval stage of parasitic worms responsible for filariasis. A rate below 1% indicates successful interruption of disease transmission. This measure reflects the effectiveness of mass drug administration (MDA) campaigns and other interventions, such as vector control and public awareness programs. Targeted endemic districts are those identified as having a historical burden of lymphatic filariasis and prioritized for intensive interventions under national elimination programs. By tracking the percentage of districts achieving this milestone, public health authorities can assess progress toward the elimination of lymphatic filariasis as a public health problem. It serves as an essential benchmark in determining whether a district can transition to the surveillance phase, ensuring sustained low transmission levels. Achieving and maintaining an MF rate below 1% is critical to breaking the cycle of infection and moving closer to global elimination goals.