The fourth Veterinary Vaccinology Network conference was held at the Stirling Court Hotel, University of Stirling, Scotland on the 18th – 19th January 2018 and was attended 100 delegates. The main theme of this years conference was fish vaccinology and immunology, which began with a session on fish vaccination strategies chaired by Prof. Alexandra Adams that included presentations by some of the most renowned scientists in the field. Prof. Oystein Evensen (Norwegian University of Life Sciences, Norway) gave an overview on fish vaccine strategies, Prof.