Those early shots did him no good because he got antibodies from his mother and his immune system was too immature to create its own antibodies. Most pups don't even START their shots until 8 weeks.
Rabies. Here they will not administer to a pup under 12 weeks, recommended is 16 weeks, then one year. If you have rabies in the area I would do that. If not delay as long as you can.
NAPWDA Certified Cadaver Dog
Waiting at the Bridge (italics
=GSDs) (hemangiosarcoma=blue):Grim , Cyra, Toby
, Rainbow, Linus, Oscar
, Arlo & Waggles