I'm really worried about my dad. He's been having fever, weakness, and a cough, and we're concerned because his CRP levels are pretty high at 48 mg, and his hemoglobin is really low, just 5.4 mg. The local doctor mentioned it's a chest infection and recommended antibiotics along with glucose. I'm not sure how serious this might be or if there might be other treatment options we should consider. Can you help us understand what might be going on and what steps we should take next?