><i>In the US, however, public health officials are unequivocal in their approach: people are categorized as either vaccinated or unvaccinated, regardless of prior infection. It's an approach with many strengths, including robust scientific data supporting vaccination for people who have recovered. That data—which we'll get into below—has consistently shown that immune responses from natural infections are extremely variable, thus unreliable.</i><p>It's easier to prove this with data when multi-billion dollar industries sell vaccines, domestically and globally...