Have deaths from COVID-19 in Europe plateaued due to herd immunity?. Issue 10241 (20th June 2020) - Okell, Lucy C; Verity, Robert; Watson, Oliver J; Mishra, Swapnil; Walker, Patrick; Whittaker, Charlie; Katzourakis, Aris; Donnelly, Christl A; Riley, Steven; Ghani, Azra C; Gandy, Axel; Flaxman, Seth; et al.