Coronavirus disease, also referred to as COVID-19, occurs when you are infected with the novel coronavirus (SARS-CoV-2). Some people with COVID-19 do not have any symptoms, while others experience a variety of symptoms, ranging from mild to severe. We are still learning about the long-term impact of COVID-19 on the body. Most people will recover completely from COVID-19 within a few weeks. However, some people may continue to experience symptoms even after the first part of the illness is over, regardless of the severity of the initial illness. ‘Long COVID’ is the term that is often used to describe these persistent symptoms. You are considered to have ‘Long COVID’ when you are still having symptoms at least 4 weeks after the initial infection. Long COVID may also be referred to by other names such as post-COVID conditions, PASC (post-acute sequelae of COVID-19) or long-haul COVID. Open access, https://www.atsjournals.org/doi/10.1164/rccm.2053P5
