Extensive literature review on vectors and reservoirs of AHL‐listed pathogens of molluscs

On request of the EU Commission the EFSA carried out a Extensive Literature Review (ELR) to provide a list of vector species or reservoirs species of pathogens of fish, crustaceans, and molluscs, listed in Annex II to the AHL, aiming to update the Annex of Implementing Regulation (EU) 2018/1882. In this External Scientific Report, the ELR and assessment of potential vector and reservoir species is described of the mollusc pathogens listed in Annex II to the AHL: Marteilia refringens, Bonamia exitiosa, Bonamia ostreae, Mikrocytos mackini and Perkinsus marinus. In total 923 research publications were collected for abstract screening and from these 153 were selected for further full text analysis. In the final data collection and assessment 67 relevant research publications were used for extracting information on vector en reservoir species of the above mollusc pathogens. The results for mollusc species for which scientific evidence indicates that a role as vector species or reservoir species is likely are presented as tables in this report. In addition, a brief assessment has been carried out of the conditions under which mollusc species shall be regarded as vectors or reservoirs of diseases of mollusc listed in Annex II.