Hi my name is Melissa, my son has been diagnosed with Di-George syndrome and has no immune system at all, the thymus is non existant. He had open heart surgery at 3 and a half weeks old (vsd, aortic arch was almost closed and a hole that was misaligned (blood was flowing from the right ventrical back into the left)He is six years old, had the lower right lobe of his lung removed last year, I have battled for six years with pneumonia and related infections, I have had him on echinacea for the last few months, and is the healthiest he has been ever. My question is, can the echinacea be providing him with some sort of an immune system. Thank you