UK's recovery trials and randomised controlled trial of drugs against COVID-19 are based at Oxford University. They are conducted along with the UK's health service, the NHS. Almost all acute hospitals across the whole of the UK - 176 in all - have enrolled sick patients. There are more than 11,500 patients taking part so far and have been testing six different treatments against the normal standard of care. A data safety monitoring committee has access to the outcome data and regularly looks to see how things are going. One of the breakthroughs has been the use of steroid dexamethasone.