Reuters

CanSinoBIO COVID-19 says booster shot can reverse drop in antibodies

Antibody levels in people inoculated with CanSino Biologics’ (CanSinoBIO) single-dose COVID-19 vaccine fell by some 30% after six months, however a booster shot could offer a significant lift, a senior executive said late on Thursday. The decline in antibodies does not necessarily mean the shots will lose their protection, though how fast they wane could still serve as an important indicator of the immune response, Zhu Tao, chief scientific officer at China’s CanSinoBIO, said in an online presentation. Apart from durable antibodies, researchers have said that other components in a person’s immune system, such as T cells and B cell memory, elicited by COVID vaccines may also contribute to protection https://www.reuters.com/article/us-health-coronavirus-variants-idUSKBN2BM3BZ.

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