urgent need help

My 3 /12 started off with Excema as an infant. He is cronically sick with sinusitis. He was on 2 -6 week rounds of antibiotics last year. He is allergic to cats, dogs, dust mites, oak, milk, eggs, peanuts and he has asthma (allergy indused) and a cronic (chronic) cough. He tested negitive for Cystic Fybrosis. He has had URI's, OM, sinusitis, croup, Allergic rhinitis, pneumonia, RAD, road uri, fifths disease, he has speech and ot delays.  Its like one thing on top of the other. Hes sick atlease 3 weeks out of the month and doctors I have seen just say, "well hes just a boy that gets alot of viruses. He did have an immune test and the results were the following: Immunoglibulin G  in range was 613 he was 522
Streptococcus Pneumoniae IGG AB (6 serotypes)  
   Stereo type 1 in range 3.2 he was .5
   Stereo type 3 in range was 4.3 he was .5
   stereo type 14 in range was 54.9 he was1.2
                    19 in range was 117 he was 1.2
                     23 in range was 50.7 he was 1.0
                     51 in range was 9.1 he did not register
Haemophilus Influenza type B antibody (IGG) in range was 9 he was .27
CBC Absolute Lymphocytes in range is 4000-10500 he was 3276.

*The doctors gave him boosters of pneumovax and hib, he was good for 9 weeks but after that hes had sinus and ear infections, viruses, astma and cronic (chronic) coughing (mostly at night)  so bad he was sent to  ER. It seems like hes getting worse. ***Now, my husband was just diagnosed with an autoimmune disorder called Hashimoto's Thyroiditis. Could this be linked to an immune issue or a genetic issue? Please point me in a directions, so I can research further.. Any suggestions would be greatly appreciated...