T he national public health emergency declared in response to the worldwide pandemic of "coronavirus disease 2019" or COVID-19 ended on May 11, 2023, in the United States. 1 Whereas most Americans infected with the causative agent of COVID-19-the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-recover their usual state of health, others experience a broad array of new or continuing debilitating symptoms. Grouped together, these various post-COVID-19 symptoms are collectively known by the patient-generated term, "long COVID; by the term, "postacute sequelae of SARS-CoV-2 infection 2 ; or by the World Health Organization's term, "post-COVID-19 condition." 3,4 In this editorial, the term "long COVID" will be used.Although a single case definition has not been widely accepted, the World Health Organization has defined long COVID as "the continuation or development of new symptoms 3 months after the initial SARS-CoV-2 infection, with these symptoms lasting for at least 2 months with no other explanation." 5 The US Department of Health and Human Services emphasizes that "long COVID is not one condition. It represents many potentially overlapping entities, likely with different biological causes and different sets of risk factors and outcomes." 6