https://mda.maryland.gov/plants-pests/Pages/phytophthora_ramorum_current_situation.aspx
Phytophthora ramorum Current Situation
An official website of the State of Maryland.
phytophthora ramorumcurrentsituation
https://www.gov.scot/publications/plant-pests-and-disease-guide/pages/phytophthora-ramorum-and-kernoviae/
Phytophthora ramorum and kernoviae - Plant pests and disease guide - gov.scot
Guidance on the plant pests and diseases that are of a significant risk to Scotland.
phytophthora ramorumplant pestsdisease guidescot