Is is safe to take a 3 1 2 month old baby to someones house who has shingles?

With precautions. The infant can acquire chickenpox, but only if exposed to debris from the shingles lesions not airborne saliva as with chickenpox. Baby may have some resistance fro mom's antibodies at 3 m, but not enough to prevent disease if heavily exposed.If the shingles site is covered or has dried out completely, it has less chance of transfer. Good hand washing & care & a visit is ok.