you question is from laura hughes of the financialtimes.ple who are finding out that they actually had coronavirus but didn't experience any symptoms? and if there are people who are getting this virus and not experiencing symptoms, how does that hamperthe experiencing symptoms, how does that hamper the test and trace approach, because dearly people aren't going to go and get a test or report themselves if they are not feeling any different? i will ask dido to come in with the details but the big picture answer is, yes, there are some people who don't have symptoms but do have the virus, and in fact, in the 0ns study, we find that around 70% to 80% of people who test positive don't have symptoms. so, thatis positive don't have symptoms. so, that is quite a significant finding, and one of the important things about this disease, in the same way that asymptomatically is one of the things that makes controlling this disease really hard, and is novel for any coronavirus, and it's part of, one of the things, that makes it so difficult. but there