Unexposed people might develop some form of resistance against Covid-19, and could lessen the severity of infection, according to a new study published in the web journal, Nature.
Results have shown that 35% of a 68-population sample of healthy adults who took part in the research study had SARS-CoV-2, the Covid-19 causative agent, reactive T cells in their blood.
What are T-cells?
T cells or T-lymphocytes are one type of white blood cell that is responsible for the body’s immune response. These types of cells induce a form of reaction that lets the immune system think that it has already surpassed a previous infection, so if the actual infection sets in, the body is able to fight with pre-existing antibodies.
Cross-reactivity could be the probable cause of this. It is a phenomenon where a particular antibody binds with a different one and is able to fight a new form of infection. This works well for preventing a severe reaction to a foreign body invader but does not bode well for antibody testing as it could cause false positive results.
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