His platelets WERE 97, so that is an improvement. The bacteria he had was a staph which is a common staph that all people have on his skin. On skin it's ok, in blood stream, as Jay put it "it make little boys feel puny". His bilirubin level is still high but that is expected since he doesn't really eat. Only way to fix that is to get him put back together again and let him eat more than a tiny drop of milk at a time.
otherwise, he is doing well. After they get a couple negative blood cultures they will see about a new PICC. Maybe he'll develop a good vein by then.