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SYMPTOMS OF VIRAL DISEASES

Viruses can cause to a variety of LEAF and FRUIT DISTORTIONS as well. This photo shows the fruit and leaves of a zucchini that has a viral infection. Note that in addition to having a mosaic pattern, the leaves also have narrow, "STRAPPY" leaf blades that are CURLED and TWISTED. The leaves also are thicker and more leathery than normal. The fruit is exhibiting mosaic/mottling symptoms and has WARTS (the yellow raised bumps). All of these symptoms are very typical of viral infections.