Well our son is almost 15 months old now and it seems for the past 5 months at least he has been going through a horrible routine of getting sick, well, sick, and well. He will get congested really bad, have these terrible fits of coughing in the morning, so we bring him to the doc, get on antibiotics for about a week, increase his CPT. After a few days he is cleared up perfectly. He will have about 3 weeks of great health then he gets hit with the congestion again. Our biggest challange with him is getting his weight up. We do really great when he is well, but when he gets sick the weight just drops.