Here is some intersting quotes
"Immune System
Iodine also plays a role in the immune system. Many years ago it was noted that bacterial infections cause an increase in the metabolism of thyroxine (38, 39). In particular, leukocytes use
halogens such as chloride and iodide to help destroy bacteria that they engulf via phagocytosis.
Chloride is used because it is available in abundance, but experiments have shown that leukocytes will use iodide just as well as thyroxine as a source of halogens for destroying the engulfed bacteria (40). The mechanism requires three players—a peroxidase enzyme, hydrogen peroxide, and iodide for destroying the bacteria with by-products of the oxidation of iodide and not just free iodine playing an important role.
Leukocytes also use other means of destroying bacteria, but the halogens (chloride and iodide) are an important part of this process.
One application of this is that iodine needs will increase while a person is fighting a bacterial or viral infection. Elevated levels of diiodotyrosine, created from thyroxine by leukocytes as they phagocytose bacteria, were found in critically ill patients fighting sepsis and severe non-systemic infections (41). Having sufficient iodine present in the body to fight infections will improve a person’s overall health and disease resistance.
What if that iodine is not supplied? Since chronic infections use up thyroxine faster than normal,
is it possible that chronic bacterial or viral infections lead to a hypothyroid condition? Could a shortage of iodine be the connection between Epstein-Barr infections and other infections and chronic fatigue or fibromyalgia?
http://www.hacres.com/diet/articles/Iodine.pdf
What if that iodine is not supplied? Since chronic infections use up thyroxine faster than normal, is it possible that chronic bacterial or viral infections lead to a hypothyroid condition? Could a shortage of iodine be the connection between Epstein-Barr infections and other infections and chronic fatigue or fibromyalgia?
http://www.hacres.com/diet/articles/Iodine.pdf