Papaya ringspot virus W
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Papaya ringspot virus W (PRSV-W)
This virus is widely distributed in tropical and subtropical regions. It has been originally described as the watermelon strain of Papaya ringspot virus. While watermelon is the most common host, the virus has been also reported to infect other cucurbits as well as some hostplants from outside the Cucurbitaceae. Symptoms include leaf mosaic, leaf deformation, vein clearing and vein thickening.