The Oxford-AstraZeneca jab creates training camps in the body for search-and-destroy T-cells which can kill even the new variants apart from providing powerful antibody response.
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‘Recipients of AstraZeneca's COVID vaccine can continue making vital cells long after the antibodies have waned, possibly for the rest of life.’
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It means the body can continue making these vital cells long after the antibodies have waned, as possibly for the rest of your life, it said. Read More..
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Scientists from Oxford, the UK, and Switzerland, writing in the journal Nature, said that T-cell protection is a "key feature" of adenovirus vaccines like the Oxford and J&J jabs.
As per the report, researcher Burkhard Ludewig from Cantonal Hospital in Switzerland said: "The T-cells that come from these cellular training camps appear to have a very high level of 'fitness'.
"Adenoviruses have co-evolved with humans over a very long time, and learned a lot about the human immune system in the process.
"Viruses are always the best teachers, and here they have taught us an important lesson about how best to boost killer T-cell responses.
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The researchers found that adenoviruses are able to get into long-lived tissue cells, known as fibroblastic reticular cells, which act as "training grounds" for T-cells.
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T-cell levels are difficult to measure, but the new study gives hope that they may last a lifetime, the report said.
Paul Klenerman from the Nuffield Department of Medicine at Oxford said: "Millions of people have received adenovirus vaccines around the world. The ultimate goal with these vaccines is the induction of long-term immune system protection using both antibodies and T-cells.
"This research helps us to understand more on the process of vaccination, and why the effects on killer T-cells are so prolonged."
Source-IANS