Hello dear, I understand your concern.Vertigo is contagious-if we go with the literary meaning of it,this statement is absolutely false.Possibly,you have not understood properly what your physician told you.Vertigo can be due to various causes like positional,meniere s disease,sound trauma,toxins,brainstem stroke,vestibular nerve inflammation to name a few.Viral infections like herpes can cause vestibular inflammation and can be contagious sometimes.You need to discuss the causal relationship with your physician and plan accordingly as virus is just one cause of it and rest of things are non-infectious.I hope it helped.