PML आ JC भाइरासजों जायो जाय स्निजि जौखोन्दो सुबुंनाव लोमजानाय महराव नुजाथियो, एइड बेरामिनि बेलायाव जेब्ला बेराम होबथा खान्थिया मैखोमै लोरबां जायो अब्ला लोमजाहोयो ।
PML is caused by a virus called JC virus which occurs in 70% of the population in latent form, causing disease only when the immune system has been severely weakened, as is the case for AIDS patients.