Is it a viral disease?

First, just looking at photos can't simply conclude that it is a viral disease, and there is too little information. ? This is the most basic common sense of plant protection.

Is it responsible to jump to such a hasty conclusion? Do you really understand? Don't mislead.

Is it universal?

Second, whitefly, drug resistance varies from place to place. Generally, it is nitenpyram or thiamethoxam or dinotefuran or pymetrozine or thiacloprid. And mixed bifenthrin is also acceptable.

Buprofezin kills eggs, not adults. It must be used with other pesticides. Buprofezin can't be used on radish and leafy vegetables, which is harmful. Pyridone has a good egg killing effect, but it is not effective for adults, and it is better to use it with the above products.

Suggest+silicone spray, apply medicine in the morning and evening, and pat the whole body. Insecticidal aerosol can be mixed in protected areas.

Use pesticide ingredients alternately, and don't use the same pesticide ingredients continuously. This is the principle of plant protection.