Mae asesiad risg wedi’i gynnal gan filfeddygon Prydain Fawr sy’n dangos bod lefel y risg mewn adar gwyllt bellach yn Uchel. Mae’r risg sy’n gysylltiedig â throsglwyddo yn uniongyrchol ac anuniongyrchol i ddofednod wedi cynyddu i Ganolig.
A veterinary risk assessment for Great Britain shows that the risk level for disease in wild birds is now High. The risk associated with direct and indirect transmission to poultry has also increased to Medium.