To: ajtj99 who wrote (18048 ) 2/15/2021 12:08:55 PM From: Qone0 3 RecommendationsRecommended By bull_dozer Fiscally Conservative Sun Tzu
Read Replies (1) | Respond to of 97558 That would be true if immunity is only measured by antibodies. But that's not what happens, if antibodies were our only defense we would all be dead from virus's. The body doesn't maintain a constant supply of antibodies for every virus we have encountered in life. It stores the information of how to produce those antibodies in T cells and B cells. This is why the Iceland study found that 50% of people that tested positive for covid were asymptomatic. Covid is a coronavirus, different coronavirus are responsible for 20% of all colds. This means that 50% of all people had the information in their T and B cells to produce an effective antibody at the start. "When a pathogenic organism or toxin does gain a foothold in the body, the defenses furnished by the innate immune system are reinforced by those of the adaptive immune system. Compared with innate immunity, adaptive immunity is a more evolved and complex system consisting of both cells and proteins. These adaptive immunity agents specifically target and destroy the invading pathogen. Within days or weeks, the adaptive immune system manufactures antibodies tailored to the pathogenic invader to halt its spread. This process, known as the humoral response or antibody-mediated immune response, relies on specific cell types, called B cells, which produce antibodies. In parallel, this response activates lymphocytes, including T cells, programmed with information to detect surface molecules specific to the invader—a second type of adaptive immunity called cellular immunity. A hallmark of adaptive immunity is that it can store—via production of specialized T and B cells—a memory of the pathogen’s unique molecular structures allowing for a more rapid response to future invasions by the same pathogen."ncbi.nlm.nih.gov