A roundup of some of the latest scientific studies on the novel coronavirus and efforts to find treatments and vaccines includes the use of miniature lungs and colons to help test Covid-19 treatments.

A new study suggests that some patients could see a decline in cognition that is equivalent to the brain aging approximately 10 years.

Antibodies against the novel coronavirus declined rapidly in the British population during the summer, a study found, suggesting protection after infection may not be long lasting and raising the prospect of waning immunity in the community.