Antibodies against coronavirus detectable up to seven months post COVID-19 onset, says study

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Antibodies against the novel coronavirus follow a classic pattern with a rapid increase within the first three weeks after symptoms, and detectable up to seven months post contracting the disease, according to a new study which assessed 300 patients infected with the virus and 198 post-COVID-19 volunteers.

According to the research, published in the European Journal of Immunology, the participants had antibodies with confirmed neutralisation activity for up to six months post infection.


The scientists, led by Marc Veldhoen from Instituto de Medicina Molecular (IMM) in Portugal, monitored the antibody levels of over 300 COVID-19 hospital patients and healthcare workers, 2500 university staff, and 198 post-COVID volunteers.

They setup an in-house sensitive specific and versatile COVID-19 serology test.

The study revealed that 90 per cent of subjects have detectable antibodies up to seven months post contracting COVID-19.

It also found that age was not a confounding factor in levels of antibodies produced, but disease severity is.


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