Epidemiology of Plum pox ‘D’ strain in Canada and the USA

The successful 10-year eradication programme for Plum pox virus (PPV) in Pennsylvania, USA was based on vigilant surveys followed by removal of all Prunus spp. within 500 m of confirmed PPV-positive trees, resulting in declaration of eradication in October 2009. In comparison, in Ontario, Canada, when PPV was first discovered in 2000, the low incidence but widely dispersed epidemic extended throughout the stone fruit industry. The Canadian...