A Singaporean woman, who was infected with the novel coronavirus in March when she was pregnant, has given birth to a baby with antibodies against the virus, offering a new clue as to whether the infection can be transferred from mother to child.

Coronavirus antibodies last at least six months and offer protection against a second infection, a study of health care workers suggested.

Researchers at the Francis Crick Institute and University College London have found that some antibodies, created by the immune system during infection with common cold coronaviruses, can also target SARS-CoV-2 and may confer a degree of protection against the new viral strain.

Growing evidence that COVID-19 antibody levels can wane swiftly after someone is infected is not necessarily bad news for immunity, experts said, and does not mean protection offered by coronavirus vaccines will be weak or short-lived.

Levels of protective antibodies in people wane "quite rapidly" after coronavirus infection, said researchers.

A large study of people receiving dialysis in the US reveals that less than 10 percent of the adult population had formed antibodies against SARS-CoV-2 by July 2020.

Poor regulation of antibodies tests — that could indicate if someone has had coronavirus — could be putting the public at risk, UK doctors have warned.

Researchers at Vanderbilt University Medical Center, Purdue University and the University of Wisconsin-Madison have isolated human monoclonal antibodies that potentially can prevent a rare but devastating polio-like illness in children linked to a respiratory viral infection.

The World Health Organization is not sure whether the presence of antibodies in blood gives full protection against reinfection with the new coronavirus, Mike Ryan, the WHO’s top emergencies expert, told a briefing.

Scientists at The Wistar Institute and collaborators have successfully engineered novel DNA-encoded monoclonal antibodies (DMAbs) targeting Zaire Ebolavirus that were effective in preclinical models.

Two types of antibodies from the blood of Ebola survivors protected animals against strains of the virus that cause deadly infections in people, researchers report.

US researchers said that they have identified antibodies that specifically protect against Zika virus infection in mice, an important step toward developing a vaccine, better diagnostic tests and possibly new antibody-based therapies.

Scientists from The Scripps Research Institute (TSRI) have new weapons in the fight against HIV.

Antibodies protect the body against diseases, but can also harm their own organism if the reactions are misdirected. Researchers from the University of Zurich have now discovered that a particular sugar in the antibodies determines whether one of the body's own cells is destroyed or not. This result could lead to new treatment possibilities for patients with autoimmune diseases.

Iranian researchers have developed a modified electrode for the determination of cytochrome c protein (CCP) and C-reactive protein (CRP) antibodies in human blood serum samples.