Who is most likely to develop severe COVID-19 even after a second jab?

 https://www.jpost.com/health-science/who-is-most-likely-to-develop-serious-covid-19-even-after-a-second-jab-673788

“Overall, we can say that the main thing is that these are not healthy people,” Brosh told The Jerusalem Post in an interview. “Almost all of them (96%) had comorbidities: heart disease, lung disease, renal disease, dementia, cancer, or other common ailments. So, people who get breakthrough infections and are admitted are sicker than a usual person.”