The Barcoding facility for organisms and tissues of policy concern (BopCo: https://bopco.myspecies.info/) is a Belgian federal focal point for identifying biological materials upon request. It provides access to the expertise and infrastructure necessary to identify organisms of policy concern and their derived products. The species identifications are based on classical morphological characters and/or DNA analyses, such as DNA Sanger sequencing (e.g. barcoding), RFLP and microsatellites. If necessary BopCo also relies on, for example, environmental DNA and/or Next Generation DNA Sequencing technologies. For BopCo, species of policy concern include, but are not limited to, vector species of diseases and parasites, invasive alien species, and agricultural pest species. BopCo s identification service is available to all stakeholders (both governmental and private) who deal with biological material of policy concern and who require accurate species identifications. This contribution provides an overview of BopCo s identification activities with respect to host and vector species of diseases and parasites that are potentially harmful to humans and/or (domestic) animals. In this context, BopCo is currently involved in four projects: (1) monitoring (exotic) disease vector mosquito species (Culicidae) in Belgium and the Netherlands, (2) identifying intermediate hosts snails of Trichobilharzia trematodes responsible for recent outbreaks of swimmer s itch in Belgium, (3) identifying snails and slugs in Greece that act as intermediate hosts of metastrongyloid nematodes provoking cardiopulmonary parasitoses in domestic and wild cats, and (4) screening the trematode vector capacity of assassin snails (Genus Anentome) in Thailand and the international aquarium trade. The former two projects will be presented in more detail, while the latter two projects are dealt with in separate contributions by respectively Vanderheyden et al. and Chomchoei et al. A list of processed requests by BopCo is available on our website (https://bopco.myspecies.info/projects).