For those recovering from COVID-19, the body develops a natural immunity that can last for a few months and sometimes like recent studies. You suggested it could even last a lifetime. However, the immune response itself can be different based on a number of factors, including the severity of the infection you’ve had, previous illness, and age.
The maximum immunity to the coronavirus begins to accumulate once in the first few weeks after the negative test, the amount of antibodies formed, derived from the immunity, slowly begins to accumulate and reaches its maximum value 90-120 days after infection, which is for the most of the people who also say the 90 day window is the safest time for a person who has previously contracted the virus. Those who had more symptoms during their recovery compared to those who may have had fewer than 5 symptoms, so immunity is believed to decrease faster after a mild or asymptomatic infection, although severe, than in cases of severe infection .
Elevated levels of antibody markers were also more noticeable in people who had more symptoms during their recovery compared to people who may have had fewer than 5 symptoms.Therefore, it is suspected that immunity decreases faster after mild or asymptomatic infection, even if severe, than with severe infection.
