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Would a vaccine protect everyone?
Not everyone responds the same to immunisation.
People will be watching the results in older people closely, because they are most at risk from the virus.
But history also suggests any vaccine could be less successful in old people because an aged immune system does not respond as well to immunisation. We see this every year with the annual flu jab.
It may be possible to overcome this by either giving multiple doses or giving it alongside a chemical (called an adjuvant) that gives the immune system a boost.

[URL unfurl="true"]https://www.bbc.com/news/health-51665497[/URL]

[QUOTE="prasad1, post: 453370, member: 17510"] [HEADING=1]Would a vaccine protect everyone?[/HEADING] Not everyone responds the same to immunisation. People will be watching the results in older people closely, because they are most at risk from the virus. But history also suggests any vaccine could be less successful in old people because an aged immune system does not respond as well to immunisation. We see this every year with the annual flu jab. It may be possible to overcome this by either giving multiple doses or giving it alongside a chemical (called an adjuvant) that gives the immune system a boost. [URL unfurl="true"]https://www.bbc.com/news/health-51665497[/URL] [/QUOTE]

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