By , and , CNNLink Copied!Ad Feedback — As most of us obsess with avoiding Covid-19 at all costs, a rapidly growing group of people around the world say they are prepared to deliberately take on the virus.Tens of thousands of people have signed up to a campaign by a group called to take an experimental vaccine candidate and then face in a controlled setting.Among them is Estefania Hidalgo, 32, a photography student in Bristol, England, who works at a gas station to pay the bills.“I do night shifts there, and it can be very lonely,” she recalled on a sunny day near her home....…By , and , CNNLink Copied!Ad Feedback — As most of us obsess with avoiding Covid-19 at all costs, a rapidly growing group of people around the world say they are prepared to deliberately take on the virus.Tens of thousands of people have signed up to a campaign by a group called to take an experimental vaccine candidate and then face in a controlled setting.Among them is Estefania Hidalgo, 32, a photography student in Bristol, England, who works at a gas station to pay the bills.“I do night shifts there, and it can be very lonely,” she recalled on a sunny day near her home....WW…