that was doctor doctor eili klein from johns hopkins university. this is bbc news.d as a result of the virus has passed 200,000. the british prime minister borisjohnson is to return to work in downing street on monday after recovering from the coronavirus. spain, which has had one of europe‘s most deadly coronavirus outbreaks, is starting to take steps to ease lockdown restrictions. children are being allowed out of their homes for the first time in six weeks and the prime minister has said people may be allowed to exercise outside from next week if conditions allow. from madrid, here‘s our europe correspondent damian grammaticas. across spain, children have been confined inside homes and apartments since schools were shut, some six weeks ago, barred from even setting foot outside their front doors by some of europe‘s strictest lockdown rules. now, though, with the number of new coronavirus infections declining to around 3,000 a day, they‘re finally being allowed out, but only for an hour each day, and all parks and playgrounds remain out of bounds. in an address to

doctor eili klein gave me more details about how — and why — the gathering of statistics played suchypes of models. mine is largely an individual—based model and attempts to figure out, based on past experience, where people are likely to go to the hospital if they get infected, and models, in turn, community transmission within the community, how it's spreading the virus across maryland and other locations, and then predicts on some level where they're likely to go and to which hospital, so hospitals can plan for when there's surges and which hospitals are likely to be hit first, and which hospitals are likely to get later effects. and that has been used to adjust transfers where people are going and moving patients from one hospital to another, so that no hospital gets too overcrowded. we live in an information age, there's a huge amount of information about the coronavirus, lots of different ways of collecting it. how do you decide what's important, what's interesting — what people need to know and what might be irrelevant or distracting? right. well, there's obviously a lot of da

let's get more from dr eili klein, assistant professor of emergency medicine, johns hopkins universityank you for your time. thank you forjoining us. yourjob is to try and work out how many people might need hospital treatment at any one time and then pass that information on. how do you work that out? we build a lot of models, different types of models. mine is largely an individual —based model in attempts to figure out based on past experience where people are likely to go to the hospital if they get infected, and then models in turn, community transmission within the community, how it is spreading the virus —— and a virus across maryland and other locations, and then predicts on some level where they are likely to go and win to which hospital, so hospitals can plan for when there are surgeries in which hospitals are likely to be in which hospitals are likely to get later fracture. and that has been used to adjust transfers where people are going and moving patients from one hospital to another so no hospital gets too overcrowded. we live in an information age, there is a huge amoun