Some seem to think that getting infected is the solution to fighting an infectious disease. No one is exactly sure how long the protection after natural infection will last and how durable that protection will be against a variety of different variants. An infection will protect you from reinfection against only the variant that caused your illness. The virus is mutating very quickly. The next mutation can cause re-infection. Some people think that after you’ve gotten a natural infection, you will be permanently protected against COVID-19 as if this were measles. That is simply not true.
An infection will cause COVID-19 antibodies can stay in the body for months. New evidence suggests that ‘hybrid’ immunity, the result of both vaccination and a bout of COVID-19, can provide partial protection against reinfection for about eight months. However, if a new variant finds ways to escape the existing immune response, then even a recent infection might not guarantee protection. The Omicron variants circuiting now are mutating at an incredibly fast rate. Many of these new variants are finding ways to break through existing immunity.
The virus is evolving so fast, that it is impossible to predict exactly how many months someone might be protected from re-infection if they survive their bout with COVID. One in five people who are infected develop long COVID which can greatly reduce quality of life.