面对疫情，许多人选择了不接种疫苗，导致传播风险加大。门卫老董和校花的小事说

　　Covid-19 is on the rise again in the UK. After multiple lockdowns and more than 197,000 deaths, experts are warning we’re now entering a fifth wave of the pandemic. So why are around four million adults in the UK still yet to receive a single dose of the vaccine? In this timely, eye-opening investigation Professor Hannah Fry seeks to understand why so many remain unvaccinated a... (展开全部)