: Covid-19: A combination of vaccination and prior infection offers more immunity than either alone #IndiaNEWS When we are exposed to a pathogen such as a virus, our immune system identifies it as a

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Covid-19: A combination of vaccination and prior infection offers more immunity than either alone #IndiaNEWS
When we are exposed to a pathogen such as a virus, our immune system identifies it as a foreign invader and mounts an attack. This ultimately results in the formation of antibodies which can neutralise the invading pathogen the next time we encounter it.It is a complex process. Our immune system forms B cells (that make antibodies) and specialist T cells (that either aid B cells or kill infected cells), as well as memory cells to prepare for any future attacks from the same pathogen.The pathogen which triggers this process can be introduced through natural infection or vaccination. Of course, after two-and-a-half years of Covid-19 we know neither of these forms of immunity are foolproof. Although prior infection and vaccination both provide some degree of immunity for a time, plenty of people catch Covid-19 after being previously infected, vaccinated, or both.So which is “better� – the immunity produced from an infection, or a vaccine? Or is a combination of both optimal? Let us take a look.Vaccines, natural immunityWhen we receive a vaccine, it exposes our immune system to parts of the pathogen, allowing it to form antibodies and memory cells, without the risks of infection. The Covid vaccines work in slightly different ways, but all expose our immune system...Read more

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