 Long COVID refers to a variety of symptoms affecting different organs reported by people following coronavirus disease 2019 COVID-19 infection. The aim of this study is to address issues such as the incidence and co-occurrence of long COVID features, their relationship to age, sex, or severity of infection, and the extent to which they are specific to COVID-19. To achieve this, a retrospective cohort study was conducted based on linked electronic health records, EHRs, data from 81 million patients including 273,618 COVID-19 survivors. The Inc. This article was authored by Maxine Taquette, Quintender Kahn, Ciara Luciano, and others. We are article.tv, links in the description below.