Immunity against COVID-19 is Better than Previously Estimate
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Early in the pandemic, many researchers feared people who contracted COVID could be reinfected very quickly. But a team of researchers from Australia, published a preliminary study last week showing the body can generate memory B cells specific to SARS-CoV-2. The research showed these cells last at least eight months, and likely even longer.

Other researchers from the United States showed memory B cells lasted at least six months, in a preliminary study also released last week.

While the researchers from Australia saw a drop in circulating antibodies against the virus after two months in the blood of the 25 patients they looked at, they found memory B cells against two important parts of the virus: the spike protein and the “nucleocapsid”, another structural protein of the virus.

They studied patients from Wuhan, where the first reported COVID cases occurred, and who therefore have the oldest immune responses. They showed T cell memory responses were still present nine months after infection.

But we still don’t know what would happen if someone was re-exposed after this timeline — only time will tell.

Source: https://fit.thequint.com/coronavirus/immunity-against-covid-19-is-better-than-previously-estimated#read-more
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