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I can barely see the little pic that you posted. That said, nothing in that looks like a virus. You need to be aware that viruses sometimes have foliage symptoms and sometimes not. Those that do can be easily confused with other problems so a visual diagnosis is not conclusive.
Some cases have flower symptoms which are generally easier to assign to a virus. Color breaks and necrotic spots (especially in white Cattleyas) are common signs. Most cases of viruses are not symptomatic at all except to reduce the vigor, growth potential, and performance of the plant, eventually killing it in some cases but not soon.
Your only choice for a definitive diagnosis are the strips above or a lab ERISA test which Agdia and other labs can perform.
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