Importance Short-term and long-term persistent postacute sequelae of COVID-19 (PASC)
have not been systematically evaluated. The incidence and evolution of PASC are …

Importance Infection with COVID-19 has been associated with long-term symptoms, but the
frequency, variety, and severity of these complications are not well understood. Many …

Whereas recent investigations have revealed viral, inflammatory, and vascular factors
involved in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) lung …

Background While it is now apparent clinical sequelae (long COVID) may persist after acute
COVID-19, their nature, frequency and aetiology are poorly characterised. This study aims to …

Background A significant proportion of individuals experience lingering and debilitating
symptoms following acute COVID-19 infection. The National Institute for Health and Care …

I. Executive Summary Background The 5 years since the publication of the first International
Consensus Statement on Allergy and Rhinology: Rhinosinusitis (ICAR‐RS) has witnessed …

Objectives/Hypothesis Olfactory dysfunction has been observed as one of the clinical
manifestations in COVID‐19 patients. We aimed to conduct a systematic review and meta …

Background The mechanisms by which any upper respiratory virus, including SARS-CoV-2,
impairs chemosensory function are not known. COVID-19 is frequently associated with …

In a preregistered, cross-sectional study, we investigated whether olfactory loss is a reliable
predictor of COVID-19 using a crowdsourced questionnaire in 23 languages to assess …

The occurrence of anosmia, the loss or change in sense of smell, is one of the most common
symptoms of COVID-19 experienced by almost 53% of those affected. Several hypotheses …