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So, take your pick. Get Covid and let your immune system handle it by being healthy nutritionally.
This is extraordinarily dangerous and provocative advice. If you are so bold go to hospital to care for people suffering from COVID and prove that your words are nor empty ones. Everyone sitting at keyboard in the safe environment may feel the hero.
COVID-19 is not a acute viral pneumonia impacting the respiratory system but rather an inflammation-based immunological response that leads to thrombosis (clotting in the lungs) which kills the patient. Inflammation and the ticking (clotting) of Blood prevents it from carrying oxygen and the patient eventually die of asphyxiation.
German autopsy report https://www.acpjournals.org/doi/10.7326/M20-2003