1. Facultad de Ciencias Marinas, Universidad Autónoma de Baja California, Carretera Tijuana-Ensenada No. 3917, Ensenada, Baja California 22860, Mexico
2. Institute of Aquaculture, Stirling University, Stirling FK9 4LA, UK
3. Institute of Microbiology and Virology, Medical School Brandenburg Theodor Fontane, 01968 Senftenberg, Germany
4. MRC-University of Glasgow Centre for Virus Research, University of Glasgow, Glasgow G61 1QH, UK