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One of the worries about vaccination plans is that we are unsure of the duration of protection that vaccination may provide.
A new study, so far not peer-reviewed, found that eight months after people had recovered from COVID-19 infection, the vast majority have robust levels of B cells (which can make antibodies as needed), as well as the types of T cells needed to fight the virus, and they have a very slow rate of decline. This slow rate of decline is consistent with many years of protection. This research sits well with the finding from a previous study that the survivors of SARS, caused by another coronavirus, still have immunity 17 years after recovering from the disease.
As vaccines generally provide stronger, longer lasting protection than natural infection, we may not need annual COVID-19 vaccination boosters as has been assumed. We await further information on this topic.
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