A British study shows evidence of declining immunity to Covid-19

A British study shows evidence of declining immunity to Covid-19

A study of hundreds of thousands of people across England indicates that immunity to the coronavirus is gradually waning – at least on one scale.

Researchers who sent finger prick tests to more than 365,000 randomly selected people in England found a 26% decrease in antibodies to Covid-19 over just three months.

The team wrote: “We observed a significant decrease in the proportion of the population with detectable antibodies over three rounds of national surveillance, using the Lateral Flow Self-Test, 12, 18 and 24 weeks after the first peak of infection in England.” In a pre-print version of their report, it was released prior to peer review.
“This aligns with evidence that immunity to seasonal coronaviruses declines over 6 to 12 months after infection and the emerging data on SARS-CoV-2 that have also revealed, over time, a decrease in individuals’ antibody levels followed in longitudinal studies.”

The study was published on Monday by Imperial College London and Ipsos MORE, a marketing research firm. At the start of the study, in June, 6% of those who tested had IgG antibody responses to the coronavirus, they reported. By September, only 4.4% had done so. For healthcare workers, prices have remained roughly the same.

Antibodies are proteins that your body naturally creates to fight infections. IgG is one type – the tests are not designed to detect other types of antibodies. Other research teams found that other types of antibodies It might last longer than IgG Do you.

The results also confirm previous studies that showed that people without symptoms of Covid-19 were more likely to lose detectable antibodies sooner rather than those who had a more severe infection.

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