Remember that the people who died from the flu were probably deficient in vitamin D3, the cheapest vitamin to supplement with the maximum effectiveness. It fights cancer too, at the prevention stage. It might not keep you from getting symptoms when exposed to the flu, but a therapeutic dose plus your good sleep habits probably will prevent you getting symptoms, but it for sure will allow you to have a survivable case.
It’s far better than this vaccine and uses pure science. Vaccines use old “science” and are administered primitively. The reason vaccine science has not been updated is because these products are protected by the government and don’t have to modernize. No one questions the conditions of health of the people they jab, and truth: for some, vaccines would be quite contraindicated.