​Lettuce fields (a and b) and surveyed locations in Jordan (c). Symptomatic lettuce leaf showing LBVD clear symptoms (d). Lettuce crops affected with LBVaV and MiLBVV (e), LBVaV (f), and MiLBVV (g). LBVD, lettuce big-vein disease; LBVaV, Lettuce big-vein associated virus; MiLBVV, Mirafiori lettuce big-vein virus.