I got a big pack of information through the post a couple of weeks ago on a clinical trial for young children. They want to test immunity to vaccinations including testing for existing immunity to Covid 19. But they dont think the Covid 19 test is accurate enough to tell the parents the results. So you are putting your child through painful blood tests just for travel expenses and the fluffy feeling of benefiting the greater good of furthering medical research. My children are 6 and 8 so couldn't consent to this trial in any way. I dont get why any parent would agree to this.