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Study sheds new light on virus antibodies

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Long-term immunity against coronavirus doubtful as antibodies fall rapidly Study

These autoimmune reactions could also be much like lupus or rheumatoid arthritis, researchers say, and should clarify the enduring signs of "long-haulers"-individuals who expertise COVID-19 signs for a lot of weeks or months after their our bodies have technically cleared the virus".

Among 365,000 randomly selected United Kingdom adults who tested themselves at home, 4.4% had antibodies in September, compared with 6% in June, according to research published Tuesday by Imperial College London and polling service Ipsos MORI.

"Our study shows that over time there is a reduction in the proportion of people testing positive for antibodies", Paul Elliott, study author and professor at Imperial College London, said in a university news release.

In July, 60 in 1,000 people reported having antibodies.

"So although we are seeing a decline in the proportion of people who are testing positive, we still have a great majority of people who are unlikely to have been exposed".

The findings by Imperial College London and market research firm Ipsos Mori also suggest the loss of antibodies was slower in 18-24 year-olds compared to those aged 75 and over.

The study's comparison with people hospitalised for other severe viral infections is being planned at the moment, said Hampshire in a tweet.

The study, which has not yet been peer reviewed to flag flaws, backs up findings from similar surveys in Germany.

British researchers tracked antibody levels in 365,000 people in England after the first wave of Covid-19 infections. Antibodies indicate when a person has previously been infected with the virus and are a useful marker to show how far a virus has spread among a population.

New research has found that coronavirus antibodies drop substantially over a short period following the initial wave of infection, casting yet more doubt over the possibility of herd immunity.

The prevalence of antibodies declined across the three rounds of testing, from 6 percent in the first round to just 4.4 percent in the most recent round. "If someone tests positive for antibodies, they still need to follow national guidelines including social distancing measures, getting a swab test if they have symptoms and wearing face coverings where required".

More specifically, the study tested for detectable IgG antibodies.

Antibodies quite literally work like soldiers defending territory against intruders.

Kroger Health's new offering will inform patients if they've recently been infected with the virus that causes COVID-19, with most results confirmed in 15 minutes.

The concept of "herd immunity" has always been touted as an alternative strategy for dealing with the coronavirus pandemic, as opposed to lockdowns while awaiting development of a vaccine, however, there is mounting evidence that runs contrary to this proposal.

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