Coronavirus: vaccines, declining antibodies and the immune memory

Countries around the world are considering or already rolling out Covid-19 vaccine booster shots amid reports of waning immunity and breakthrough infections.As debate rages over boosters, some are asking why they might be necessary so soon after vaccination, when there should still be immune memory.Vaccines work to “train” the body to fight a specific pathogen, using inactive or weakened parts of it, or a blueprint of it, to prompt an immune system response. The body then produces antibodies,…

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