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Diagnostic manufacturers are turning their attention to antibodies for those who have been vaccinated for the SARS-CoV-2 virus, and the U.S. FDA’s Tim Stenzel had some advice about this on the Feb. 10 testing town hall. Stenzel advised that developers think of such tests in the same vein as a companion diagnostic (CDx) in that these antibody test will have to be separately validated for each vaccine that is included in the test’s labeled claims.
PERTH, Australia – Gbs Inc. reported filing an initial public offering on the Nasdaq for $20 million, as the company looks to launch the first noninvasive SARS-Cov-2 test. A subsidiary of Sydney-based The Iq Group Ltd. (NSX:IQG), Delaware-based Gbs has developed a biosensor platform that enables real-time diagnostic point-of-care (POC) tests, and the funds raised will enable the company to launch its SARS- CoV-2 test and a saliva glucose test.
The U.S. FDA has granted emergency use authorization (EUA) to Genscript USA Inc. for its Cpass SARS-CoV-2 Neutralization Antibody Detection Kit, the first commercially available test to detect neutralizing antibodies in individuals previously infected with the novel coronavirus. The serology test measures levels of neutralizing antibodies in samples from patients recovering from COVID-19 as well as people vaccinated against the SARS-CoV-2 virus.
LONDON – People infected with COVID-19 are likely to have T-cell immunity six months after contracting the virus, according to a U.K. study of 100 subjects who had an asymptomatic or mild to moderate infection.
LONDON – Three large scale population surveys conducted between late June and the end of September have shown the prevalence of SARS-CoV-2 antibodies in England declined by 26.5% over three months. The findings rest on the results of more than 350,000 self-administered lateral flow blood tests that were carried out at home by volunteers who were randomly selected from general practitioner registers.
Siemens Healthineers AG snagged a key role in the mystery playing out across the world's pandemic stage – what do antibody test results mean in terms of immunity to SARS-CoV-2 and how do different tests assessing different proteins compare? The U.S. CDC and the Joint Research Centre (JRC) of the European Commission tapped the Erlanger, Germany-based company to take the lead in developing a process to standardize antibody assays.
Through the use of sequencing data, researchers in Hong Kong presented a case study providing the strongest evidence yet that individuals can become reinfected with SARS-CoV-2 after clearing a first infection.
LONDON – A large scale population study has shown that home self-testing with low-cost lateral flow diagnostics is a valid way of tracking the COVID-19 pandemic. A total of 105,651 people across the U.K. tested themselves for SARS-CoV-2 antibodies with a fingerprick blood test as part of the REACT (REaltime Assessment of Community Transmission) study.
Much of the research on the immune response in patients with COVID-19 has focused on the humoral antibody response. Adaptive Biotechnologies Corp., on the other hand, has focused on cellular immunity to measure the T-cell response to infection with SARS-CoV-2.
PERTH, Australia – As the state of Victoria in Australia records its deadliest day since the COVID-19 pandemic began, reporting 17 deaths and 394 new cases, Atomo Diagnostics Ltd.’s new COVID-19 antibody test could ease pressure on health care systems.
