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Footballguy
Do you realize there are other infections with immunologic sequelae, some with biphasic illness analogous to covid-19? While it sounds good on paper, immunotherapy hasn’t been a mainstay of treating many infections. That's not to say there is no role for novel or repurposed therapies, and many are being investigated. The NIH has a nice summary of many of them here.
And I don’t think the FDA is quashing any cheap, effective immunotherapy. Heck, the mainstay of treating severe covid is dexamethasone.
Yes I do, and we have had enormous success treating thousands of Long COVID patients with an immunologic approach combined with a statin. We have also had success treating patients with post lyme, fibromyalgia, chronic fatigue and MECFS with a similar approach.