6.8 C
Thursday, December 3, 2020

Study suggests COVID-19 immunity is not long-lasting

A study funded by the British government suggests that immunity against COVID-19 declines more quickly than scientists had hoped.

Conducted by Imperial College London and the Ipsos Mori polling institute, the study surveyed more than 365,000 adults in England who used at-home finger-prick antibody tests and found “a significant decline in the proportion of the population with detectable antibodies over three rounds of national surveillance.”

According to the study, the percentage of people who tested positive for COVID-19 antibodies fell by more than one-quarter between June 20, three months after the United Kingdom’s peak caseload, and Sept. 28. In June, roughly 6% of those who participated in the study had detectable COVID-19 antibodies. By late September, only 4.4% of participants had detectable antibodies. The non-overlapping community samples collected were sent out randomly to adults on a National Health Service patient list, “which includes anyone registered with a General Practitioner in England.”

The study has not been peer-reviewed yet, and scientists have not confirmed that COVID-19 antibodies are effective enough to prevent reinfection. The study did suggest that, like other viral disease responses, the severity of the disease correlated with a patient’s immune response. People who displayed symptoms were more likely to have detectable antibodies than asymptomatic patients.

The study also found younger adults, aged 18-24, lost antibodies at more than half the rate of the oldest participants. Positivity in younger adults fell 14.9%, according to the study, whereas adults aged 75 and older experienced a 39% decline in detectable antibodies.

Healthcare workers did not experience a noticeable decrease in detectable antibodies between June and September.

The study noted that antibodies are only one part of the body’s response to the coronavirus, adding it is still unclear how T cells and non-virus-specific immune system responses contribute to immunity and a patient’s ability to fight the disease.

“It is not possible to say with certainty that the loss of antibody positivity in the LFIA would correlate with an increased risk of an individual being reinfected,” the study said. “However, at a population level, the waning we have observed may indicate an overall decline in the level of population immunity.”

Read More at Washingtonexaminer

Latest news

Top Democrats throw support behind new bipartisan virus aid package

The top Democrats in the House and Senate have signaled support for a new,...

Lin Wood responds to ‘dishonest’ Breitbart attacks on his voting record

Lin Wood has responded to attacks from Breitbart that suggest he’s a partisan Democrat based on his voting record:1. Breitbart is dishonest. Historically, I...

“We Saw 10 Ambulances Driving To The Scene” – Port Warehouse Explodes In Bristol, “Multiple Casualties” Reported

Another port warehouse has exploded, this time in the British city of Bristol, in the outer neighborhood of Avonmouth, where the city's port is...

Cutting the red tape requiring animal testing saves lives

Moderna Therapeutics just reported that, based on early human trials, its COVID-19 vaccine is...

Related news

United Kingdom touts vaccine approval as victory for Brexit despite US and European role

Britain’s approval of a coronavirus vaccine has occasioned a diplomatic dispute over which country...

CDC director says winter might be ‘most difficult time’ in US public health history

Dr. Robert Redfield, director of the Centers for Disease Control and Prevention, offered...

US media coverage of coronavirus skews overwhelmingly negative compared to international sources: Study

Research shows U.S. media outlets have covered the coronavirus pandemic far more negatively than...

The Truth About Pot, CBD, and Driving

As marijuana laws relax...

Study: Menopause Can Interfere With Women’s Jobs

Menopause symptoms can interfere...

Hospitals and prisons are biggest losers under Brown’s proposed budget

Gov. Kate Brown unveiled a two-year budget proposal Tuesday that sees slight increases...