Gay and bisexual men have been told they cannot take part in a blood trial which experts hope could serve as a potential coronavirus treatment.
People who have recovered from Covid-19 have been encouraged to donate their blood plasmas, which will then be transfused to infected patients at London’s Guy’s and St Thomas’s Hospital.
It is hoped the process, called convalescent plasma, will help patients whose immune systems are not producing sufficient antibodies to fight the novel virus.