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A recent study has attempted to untangle taste and olfactory dysfunction 1 year after a COVID-19 infection. Taste dysfunction was gone 1 year after exposure to COVID-19, but smell loss remained for some people, a national cross-sectional study showed.

Empirically measured taste function didn't differ between individuals who had acute SARS-CoV-2 infection a year earlier and uninfected people, reported Shima Moein, MD, PhD, of Sensonics International in New Jersey and the University of Pennsylvania in Philadelphia, and co-authors of the study.

However, olfactory dysfunction was present in 30.3% of individuals with prior COVID-19 compared with 21% of those who had no history of COVID infection (OR 1.64, 95% CI 1.18-2.27), Moein and colleagues noted in JAMA Network Open.

Long-term taste loss after COVID may reflect damage to olfactory epithelium, not taste buds, the researchers suggested. Olfactory deficits were greatest for those diagnosed with COVID when the original untyped and Alpha viral variants were prevalent.

"Our study sheds light on a critical yet often overlooked aspect of the COVID-19 pandemic: the pervasive impact of smell loss on affected individuals," Moein told MedPage Today. "Despite its prevalence, smell loss has remained largely neglected by health care professionals and policymakers, leading to a lack of awareness and support for affected individuals." Head over to MedPage Today to read more about it.