This PRA is an update to that produced by CSL in 2004 following interceptions of the virus in the UK on imported Verbena plants in that year. The first interception occurred on plants in a UK nursery that had originated in the USA, been exported to Portugal and received in the UK in mid-2004. Further infected but symptomless material was found on this nursery in July 2004. The second interception occurred on a different UK nursery on cuttings of Verbena originating in Costa Rica. The need for an updated PRA was identified during consideration of the virus for the UK Plant Health Risk Register. An assessment is required to help inform the decision on whether statutory action against future interceptions is justified.