A US study found that 1 in 10 adults get chronic Covid after Omicron.

A new study by the National Institutes of Health has found that one in 10 people will suffer from Covid-19 long after contracting an Omicron infection – a lower estimate than previously thought. The COVID-19 pandemic.

The research — which involved nearly 10,000 American adults — was published Thursday in the Journal of the American Medical Association.

It highlights a dozen signs that distinguish long-term effects. Chronic COVID is broadly defined by the Centers for Disease Control and Prevention as signs, symptoms, and conditions that persist or develop after the initial COVID-19 infection. It is also sometimes referred to as long-term COVID-19, post-acute COVID-19, chronic COVID, post-COVID conditions and long-term effects of COVID.

The study compared more than 8,600 adults who had COVID-19 at different points in the pandemic, with another 1,100 who were not infected.

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This undated, color electron microscope image, made available by the U.S. National Institutes of Health in February 2020, shows the novel coronavirus SARS-CoV-2, shown in yellow, on the surface of cells. emerged from, indicated in blue/pink, cultured in the laboratory. . The sample was isolated from a patient in the U.S. The risk of prolonged Covid-19 is lower in the Omicron era than in the early waves of the pandemic, according to a study of nearly 10,000 Americans aimed at helping scientists understand the mysterious condition. to help in better understanding. Thursday, May 25, 2023 JAMA. (NIAID-RML via AP)

About one in three COVID-19 patients experienced prolonged COVID, which was similar to study participants who reported being sick earlier. omicron began to circulate widely More than two years ago in America.

Notably, this is also when the study began, and the researchers pointed out that people who had long-standing COVID symptoms may have been more likely to enroll.

Cells infected with the omicron strain of COVID-19

This colorized electron microscope image, made available by the National Institute of Allergy and Infectious Diseases in November 2022, shows cells, indicated in purple, infected with the Omicron strain of the SARS-CoV-2 virus. , orange, isolated from a patient sample captured at the NIAID Integrated Research Facility in Fort Detrick, Maryland. (NIAID/NIH via AP)

In contrast, about 2,230 patients had their first infection after the study began, allowing them to report symptoms in real time.

Only 10% experienced long-term symptoms after six months.

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Although millions of people around the world have been chronically infected with COVID, symptoms vary and scientists still don’t know what causes it, why only some people get it, or even how to diagnose it. Kind is better.

gave The study focused on a dozen symptoms, These include fatigue, mental fog, dizziness, gastrointestinal symptoms, palpitations, sexual problems, loss of smell or taste, thirst, chronic cough, chest pain, symptoms that worsen after activity, and unusual movements.

Los Angeles Omicron Line

On December 27, 2021, a COVID-19 testing line wrapped around the block at the Long Beach City College PCH campus, according to social media and site workers. (Brittany Murray/Media News Group/Long Beach Press-Telegram via Getty Images)

Others shared by the CDC include fever, trouble breathing and concentrating, headache, trouble sleeping, pins and needles sensation, dizziness upon standing, depression or anxiety, joint or muscle pain, itching. and include changes in the menstrual cycle.

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The study authors assigned a score to the symptoms in hopes of establishing a threshold, although one doctor stressed that medical professionals should not use the list to diagnose someone with chronic COVID.

The Associated Press contributed to this report.

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