The main thing in immunity, after a person has been ill with a
coronavirus, is not the presence of antibodies, but the presence or absence of so-called “immune memory cells”. Larisa Popovich,
director of the Institute for
Health Economics at the Higher School of Economics, told RBC about this. Earlier, Alexander Gorelova, deputy
head of the Central Research Institute of Epidemiology of Rospotrebna...
Immunity is the body's complex system of defense against infection, disease, and other external influences. It consists of various cells, tissues, and organs that work together to provide defense for the body. Immunity can be innate (natural) and adaptive (acquired). Innate immunity is the body's primary defense, responding to threats without prior experience. Adaptive immunity develops in response to specific pathogens and provides a more specific and long-lasting defense. Maintaining a healthy immune system includes proper nutrition, physical activity, adequate rest, immunizations, and other measures to keep the body in balance.