The tonsils play a role in the immune system in children forming the first line of defence against respiratory infections caused by bacteria and viruses. Unfortunately in many cases the tonsils become chronically infected as appears to be the case with your son. The usual cause of infection is a bacteria called 'Strep'. Although the usual advice is that a child should have at least 5 infections in a year before considering removal of tonsils, your son's tonsils are such a problem for him that he has been hospitalised 4 times. His tonsils certainly should be removed ASAP.
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