Researches revealed that drug 1, drug 2 and vitamin C can reduce the infection severity grade of MBV and inhibit MBV disease from breaking out. For economical reason, it is better that drug 1 and vitamin C are used together for prevention of MBV disease.

• 鉴于 2号药物价格较昂贵 ；而 1号药物和维生素C则药源丰富 ；价格便宜 ；其作用和 2号药物无显著性差别 ；故主张 1号药物和维生素C合用 ；作为预防MBV病发作的首选药 .