COVID: Loss of taste or smell indicates strong immunity – study

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 COVID: loss of taste or smell points to strong immunity – study

A new peer-reviewed study published on Plos One has shown that loss of taste or smell during COVID-19 infection is a strong predictor for a robust immunological response.
< br /> As the COVID-19 pandemic has evolved, chemosensory dysfunction or impairment of smell and/or taste has been identified as a key symptom of severe acute respiratory syndrome coronavirus SARS-CoV-2 and was present to varying degrees in 43 – 62% of people with COVID-19.

Loss of smell usually occurs early in the course of COVID-19 and can sometimes be the only indicator that a person is truly sick, as up to 20% of patients may not have any symptoms, other than impaired sense of smell, which may help provide treatment.
In addition, the study shows there may be an association between chemosensory dysfunction and milder disease severity.

Researchers at Columbia University Irving Medical Center under the direction of Dr. Overdevest investigated the relationship between serological response and loss of chemosensory sensitivity.

After examining 306 patients, 64.1% of whom reported dysfunction of smell and taste, the researchers found that the chances of developing antibodies in them were 1.98 times higher.

The researchers noted that further research should “examine the prevalence of chemosensory dysfunction and its positivity among people who have been vaccinated and people infected with various variants of SARS-CoV-2”.

The World Health Organization estimates that 90% of the world's population now has some resistance to the coronavirus.
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