According to the information given, your son has no active
virus. Once someone has been exposed to HCV, they will always show positive
for the antibodies, but the amount of active virus (viral load) is what tells you if you have viral replication going on. No active virus would mean not activity going on.
It appears that he was exposed to the virus during birth, but cleared it on his own. That's a good thing. :-)
Others may explain it better than me.