Natural immunity vs vaccination: Why vaccines are the safer path to long-term protection

Publication date: Jun 30, 2025

Allowing a virus to circulate freely would lead to unnecessary illness, strain on healthcare systems, and avoidable deaths. To acquire natural immunity, a person must first be infected. People undergoing chemotherapy, living with autoimmune diseases, or taking immunosuppressive medications may not survive the virus, or may fail to develop a protective immune response even after infection. In 2023 alone, children under 15 represented sixty-five per cent of cases and seventy-five per cent of fatalities. These strains can partially evade immune protection, whether from past infection or vaccination. “A meta-analysis published in The Lancet in February 2023 evaluated 65 studies across 19 countries to assess the strength and duration of natural immunity against COVID-19. Vaccination provides a safe, controlled route to immunity without the danger of illness. High transmission rates accelerate viral mutation. We’ve seen this with the transition from the original strain to Delta and later to Omicron; not everyone can safely acquire immunity through infection.

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