For many parasitic nematode species, adults inhabit the GI tract and eggs are shed in faeces and subsequently develop through larval stages in the faeces or soil before infective larvae are either ingested or penetrate the skin of hosts to complete the lifecycle. Worms with this broad type of lifecycle include important human pathogens like hookworms, Ascaris, Strongyloides species, and Trichuris as well as many key veterinary parasites. For most of these, accessing adult parasites is difficult, so genetic surveillance of their populations depend on egg material, or larval stages that can, in general, easily be obtained from eggs by brief incubation of stool samples. This project will investigate methods for sequencing eggs and early larval stages. This data is part of a pre-publication release. For information on the proper use of pre-publication data shared by the Wellcome Trust Sanger Institute (including details of any publication moratoria), please see http://www.sanger.ac.uk/datasharing/