Diseases (Basel, Switzerland)Jul 27, 2026

Long COVID-19's impact on smell and taste measured by surveys and tests

Long Covid Weekly Brief ↗PubMed ↗DOI ↗OA ↗

Updated Jul 28, 2026

Abstract

Long COVID-19 is characterized by persistent or new symptoms occurring weeks to months after infection.

Symptoms commonly associated with Long COVID-19 include fatigue, cognitive impairment, and changes in smell and taste.
The study focuses on understanding how these symptoms are distributed and evolve during the post-acute phases.
Despite increasing clinical observations, the exact biological mechanisms behind Long COVID-19 symptoms remain unclear.

Simplified

COVID-19 has triggered a global health crisis with sequelae extending beyond the acute phase of infection. Long COVID-19 is characterized by the persistence or new onset of symptoms weeks to months after the initial infection, including fatigue, cognitive impairment, and chemosensory dysfunction. Despite growing clinical evidence, the underlying pathophysiological mechanisms remain incompletely understood. This study aimed to evaluate the prevalence, distribution, and evolution of symptoms during the post-acute phases, with particular emphasis on olfactory and gustatory alterations.

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Long COVID-19's impact on smell and taste measured by surveys and tests

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