A new antibody treatment with the potential to give people instant immunity after being exposed to Covid-19 and prevent illness is being trialled by scientists in the UK.
The drug would offer immediate and long-term protection to patients when it would be too late to offer a vaccine, potentially saving thousands of lives.
It could be given as an emergency treatment to hospital inpatients, care home residents and university students to help reduce the spread of the virus.
People who live with someone has caught COVID or been exposed to them could be injected with the drug to stop them becoming infected, even if they have not had a coronavirus vaccine.
British scientists from the University College London Hospitals NHS (UCLH) have already injected ten people with the drug as part of the new trial called Storm Chaser, with an aim to trial the new treatment on 1,125 people globally. The participants received two consecutive doses of the drug.