Vibrio aestuarianus Clade A and Clade B isolates are associated with Pacific oyster (Crassostrea gigas) disease outbreaks across Ireland. Vibrio sp.

Bacteria from the Vibrionaceae family have been implicated in mortalities of farmed Pacific oysters (Crassostrea gigas) from multiple locations, particularly France. However, evidence of their role in outbreaks in the UK and Ireland has, to date, been limited. Forty-three Vibrio isolates recovered from Pacific oyster summer mass mortality episodes in Ireland from 2008-2015 were sequenced and characterised.