In medical news, scientists at AstraZeneca said Monday an experimental vaccine being developed at Oxford University in Britain has shown promising results as the vaccine has triggered an immune response in both younger and older patients. Meanwhile, researchers at Imperial College in London found the number of people testing positive for COVID-19 antibodies has fallen by 26% between June and September, suggesting immunity fades rapidly and people who have recovered can be reinfected.
In more medical news, drug maker Eli Lilly said Monday its antibody treatment was ineffective on hospitalized patients with advanced cases and that a government-sponsored trial would stop administering the drug to new patients.