https://healthfeedback.org/claimrevi...fected-people/

An excerpt:


KEY TAKE AWAY
Most people who had COVID-19 develop some level of protective immunity. However, the immune response can vary a lot between individuals, and not all COVID-19 survivors develop sufficiently protective immunity, since reinfection can occur. COVID-19 vaccines have demonstrated a more robust and reliable immune response than natural infection. They can also provide additional benefits, such as boosting immunity in people who had a low immune response after natural infection or enhancing protection against variants of the virus.