CMV IGG in my 7 month ol. Should we?

Dear sir My seven month old son is CMV IGG positive. Actually on regular checkup 2 month back his head circumference measured 45 cm. Therefore ,doctor in rewa M.P. ordered various test as TORCH test of son n his mother Funds test for eye MRI of brain CBC Urine culture Blood culture . However , in brain MRI mild dilation of ventricles wad diagnosed ,which neurologist said its normol . Also both son n mother were CMV IGG positive , sons reading is 19 unit whereas his mothers is 120 unit. Otherwise baby is normol and is growing as per the norm. In rewa one doctor suggested that we should go for ganclicovir injection course but i came to Jabalpur for second opinion and here i consulted 4 paedritician and all are against giving ganclicovir , as they say your baby is normol and CMV positive doesn't indicate any diseases. U take care of his diet n immunity. Han as your wife is also CMV positive, u have to take care of it in next delivery. Sir plz advise , what should we