The document explains why vector control is important in national programmes and describes the preparation of a tailor-made vector control plan for national programmes. It outlines entomological procedures for regular and specific vector control and how data should be analysed for better overall understanding of filarial transmission and vectors. The document will also be useful for teaching personnel in lymphatic filariasis programmes about the use and value of entomological procedures in overall epidemiological appraisal in the context of elimination