Health
A UK study found evidence that antibody immunity to COVID-19 declined over time
London (Reuters)-Antibodies to the new coronavirus decline rapidly in the UK population during the summer, post-infection protection may not last long, and community immunity, according to a study discovered Tuesday. There is an increasing possibility that the force will decrease.
Scientists at Imperial College London tracked antibody levels in the UK population following the first wave of COVID-19 infection in March and April.
According to their study, the prevalence of antibodies dropped from 6% of the population at the end of June to just 4.4% in September. This increases the likelihood that population immunity will decline ahead of the second wave of infections that have been forced to blockade and limit the region in recent weeks.
Immunity against the novel coronavirus is a complex and ambiguous area that may be supported by T and B cells that can stimulate the rapid production of antibodies after reexposure to the virus, but researchers say The proposed immunity that describes the coronavirus experience may not persist.
Wendy Berkeley, Dean of the Department of Infectious Diseases at Imperial College London, told reporters, “You can see antibodies, you can see them declining, and the antibodies themselves are very protective. I know. “
“In the balance of evidence I say, it seems that what we know about other coronaviruses and that immunity declines at the same rate as antibodies decline. This is a decline in immunity at the population level. It shows that it is. “
Those with COVID-19 confirmed by gold standard PCR tests had less pronounced reductions in antibodies than those who were asymptomatic and unaware of the original infection.
There was no change in antibody levels seen in health care workers, probably due to repeated exposure to the virus.
The Imperial findings have been released as preprinted paper and have not yet been peer reviewed.
Berkeley said the rapid decline of antibodies due to infection does not necessarily affect the efficacy of vaccine candidates currently in clinical trials.
“A good vaccine can be better than innate immunity,” she said.
Report by Alistair Smout; edited by Bill Berkrot
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