The problem is that you have to add tonic water and gin to make the substance palatable which will cause a run on scarce world gin supplies.

Personally, I think the relation between Vitamin D-deficiencies and the severity of outcomes is compelling.

Vitamin D controls our immune system. It controls the release of T-Cells and microphages of our innate immune system. It controls the release of cytokine. Vitamin D, in conjunction with Vitamin K, controls blood clotting.

It is possible that the real epidemic is not a virus but a world wide vitamin D deficiency. Vitamin D is produced when UV B rays from the sun hit the skin.

So, the solution is for people to spend their days naked on a beach sipping gin and tonics.