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Explainer-What researchers say about the long-term effects of COVID-19 By Reuters

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© Reuters. FILE PHOTO – Medical staff treat coronavirus patients (COVID-19), at Batajnica COVID-19, Belgrade, Serbia. October 4, 2021. REUTERS/Marko Djurica/File photo

Manojna Addipatla

NEW YORK, (Reuters) – The World Health Organization (WHO), this week released a definition of “long COVID,” a term that describes the chronic health issues experienced by some COVID-19 survivors. The syndrome is still being studied by scientists. These are the facts they have so far.

HOW DO THE WHO DEFINE LONG COVID?

The WHO defines https://www.who.int/publications/i/item/WHO-2019-nCoV-Post_COVID-19_condition-Clinical_case_definition-2021.1 long COVID as a condition with at least one symptom that usually begins within three months from the onset of confirmed or probable infection with the coronavirus, persists for at least two months, and cannot be explained by another diagnosis. Sometimes symptoms appear during an infection, or after acute illness is over.

Fatigue, breathlessness, cognitive issues, and shortness of breathe are some of the most frequent persistent symptoms. Some other symptoms are chest pains, heart palpitations and issues with smell or taste. It is common for long-term COVID to have an effect on day-to-day functioning.

The WHO may alter its definition as more evidence becomes available and new information is uncovered about the effects of COVID-19. According to the agency, children may have a separate definition.

HOW SIMPLE IS LONG COVID CONSIDERABLE?

It is unknown how many people are affected. Oxford University https:// studied more than 270,000 COVID-19 patients and found at most one long-term sign in 37%. These symptoms were higher among those who needed hospitalization.

Harvard University also conducted a separate study https:// that involved more than 52,000 COVID-19 patients whose symptoms were only mild to moderate. It found that COVID-related conditions can be more common in those under 65.

More than 236 million infections caused by the coronavirus have been reported so far, according to a Reuters tally https://graphics.reuters.com/world-coronavirus-tracker-and-maps.

STUDIES ON LONG COVID SYSMPTOMS: WHAT DO THEY SHOW?

In a study https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(21)01755-4/fulltext published in the Lancet, Chinese researchers reported that 12 months after leaving the hospital, 20% to 30% of patients who had been moderately ill and up to 54% of those who were critically ill were still having lung problems.

Harvard also discovered that people with COVID-19 history are at greater risk of developing neurological diseases and diabetes.

HOW DO PEOPLE REcover FROM LONG COVID!

Many long-term COVID symptoms resolve with time regardless of severity. According to the Lancet study, the proportion of patients who still experience at least one symptom decreased from 68% to 49% after six months to 49% to 12 months.

According to the WHO, long COVID symptoms may change over time.

LONG COVID VACCINES COVID-19 VACCINES MAY HELP

Some people suffering from long-term COVID have seen improvements in symptoms following vaccination. This has been confirmed by small studies. U.S. Centers for Disease Control and Prevention stated that more research needs to be done on the effect of vaccines on COVID.

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