We already know that SARS-COV-1 IGG antibodies last ~3 years [1]. FWIW antibodies doesn't prevent you from getting sick- there's plenty of studies for the influ

We already know that SARS-COV-1 IGG antibodies last ~3 years [1]. FWIW antibodies doesn't prevent you from getting sick- there's plenty of studies for the influenza vaccine that show it helps with severity of disease as well in some individuals [2]. I would much rather have a "really bad cold" again then get full COVID-19. Bigger questions around viral shedding after having immunity, but I would almost certainly imagine much less. [1]. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2851497/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2851497/ [2]. https://www.ncbi.nlm.nih.gov/pubmed/28525597 https://www.ncbi.nlm.nih.gov/pubmed/28525597