Marie, I know how scary that can be. My son was in the hospital in an oxygen tank at 4 mos and in again at around 14 mos. with pneumonia. Later sent for testing, but first test determined he was asthmatic and so we didn't have to have the next test for cystic fibrosis. Thank God, but he still has the asthma and did not outgrow it. Daughter is severely allergic. Some of this is genetic. Pat