A new coronavirus variant that shares some similarities with a more transmissible and intractable variant discovered in South Africa is on the rise in New York City, researchers said on Feb. 24.

French researchers are using tiny antibody particles extracted from the family of animals that includes camels and llamas to produce a test they say can detect if patients have Covid-19 faster and more accurately than existing methods.

NKarta Therapeutics is using engineered chimeric antigen receptor natural killer T cells (CAR-NKT cells) for allogeneic therapy, showing substantial benefits both in vitro and in vivo, according to the company’s CSO James Trager at the virtual CAR-TCR Summit – Europe.

A roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines for Covid-19 includes research on long-lasting Covid-19 effects seen in children.

AstraZeneca denied the company’s Covid-19 vaccine is not very effective for people over 65 years old, after German media reports said officials fear the vaccine may not be approved in the European Union for use in the elderly.

The new Covid-19 variant identified in South Africa can evade the antibodies that attack it in treatments using blood plasma from previously recovered patients, and may reduce the efficacy of the current line of vaccines, according to scientists.

When it comes to matters of heart health, no amount of exercise is too much, scientists said regarding research that debunks the myth that high levels of vigorous physical activity might not always be beneficial.

The chemotherapy pralatrexate and the antibiotic azithromycin were successful at preventing replication of the SARS-CoV-2 virus, according to research with Shenzhen Institutes of Advanced Technology in China.

A Covid-19 vaccine being developed by CSL Ltd. and the University of Queensland was scrapped after numerous vaccine recipients reported receiving false positives on certain HIV tests, according to the Wall Street Journal.

Five key genes are linked with the most severe form of Covid-19, scientists said, in research that also pointed to several existing drugs that could be repurposed to treat people who risk getting critically ill with the pandemic disease.