Chloroquine works against CV-19 it enables body to absorb more zinc. Zinc appears to be the most effective agent in disrupting the virus and preventing the ‘cytokine storm’, which is the deadly phase in which the virus tricks the body’s immune system into attacking its own healthy tissue, with often fatal consequences.
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Why isn’t there more excitement about this readily available treatment?
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One possible reason is that chloroquine is a generic drug to which no pharmaceutical company owns the patent. Big Pharma’s money and lobbying power will strive to persuade governments – and markets – that the only viable solution to the coronavirus is a vaccine. But in the short term this simply isn’t true. Nor is it clear to me that the global economy is going to survive on lockdown for as long as it takes to develop and test that vaccine – which may not even prove effective in any case.

Note that point in the Todaro and Rigano paper about the need for FDA approval. There is no time to waste.
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https://www.breitbart.com/politics/2020/03/18...ronavirus/