Worldwide distribution. On papaya and cucurbits. An important disease.
Leaves with yellow and green patterns, distorted, small. Older leaves with dark green streaks on the stalks. Ringspots on the fruit.
Spread by (i) aphids, (ii) the trade in nursery plants.
Cultural control: remove volunteer papaya; restrict people entering plantations; remove disease trees in new plantations, and those in old blocks; netting; resistant varieties offer best (only) solution.
Chemical control. not appropriate as aphids pick up virus from disease plants and spread it to healthy trees before insecticides kill them.