The doctors had sort of expected this to happen last week. We had been hoping to avoid it. Jeremy started getting lethargic this afternoon, and after some out of character napping, we discovered he had developed a fever this evening. So they've headed back to Westmead tonight.
Update: Blood count results came back. Very low white blood cell count, low platelet count and low haemaglobin. So he's up for a transfusion tonight and probably tomorrow as well.