According to WHOA, emerging diseases are new infections caused by the evolution or modification of an existing pathogen, such as a parasite, due to a change of host, vector, pathogenicity or strain. These diseases could become more numerous in the context of global warming, which could alter the range of certain parasites and/or their potential vectors. With regard to emerging parasites, the concept of emergence is associated either with a new parasite described by science or with a parasite whose area of incidence or host range is expanding. Very often, the mechanism of the emergence consists of two steps: first, the introduction of a new parasitic agent and second, its spread to a more susceptible or immunologically unadapted population. The emergence of parasites is often linked to their reservoir hosts, often found in wildlife (e.g. foxes in the case of Echinococcus multilocularis). More recently, some parasite introductions or expansion into new areas have been associated with an increase in vectors such as the recent increase of Dirofilaria repens, which emerged recently in Northern European countries. Regarding vectors, people think about biting arthropods. What about gastropods? They host many parasites, including some emerging ones. The recent emergence of Angiostrongylus cantonensis in Spain, first in Tenerife, then in Majorca and finally in mainland Spain in and around Valencia, is evidence of their importance. In addition to Human diseases, an important point is the increase in parasitic diseases also in domestic animals such as pulmonary infections in cats due to Aelurostrongylus abstrusus, Troglostrongylus brevior … Moreover, the increase and spread of Angiostrongylus chabaudi, A. vasorum, as well as the recent cases caused by A. dujardini show the importance of t aking into account terrestrial gastropods. The impact of these parasites/hosts on Global Health highlights the need for a European network, which we are currently building.