A new study suggests that the COVID-19 vaccines can cut the risk of long COVID-19 symptoms in half for fully vaccinated people.

Can fully vaccinated people get long COVID-19 symptoms?

The new study — which was published in Lancet Infectious Diseases journal — found it was extremely rare for fully vaccinated people to get COVID-19 after full vaccination.

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The study included about 1 million fully vaccinated people from Britain, who had received vaccines from Pfizer-BioNTech, Moderna or AstraZeneca, according to The Washington Post.

The analysis came from data in the Zoe COVID Study, which tracks people’s COVID-19 symptoms and test results. Participants often submit their own information into the app.

What are common long COVID-19 symptoms?

In May, researchers from Stanford University reviewed 45 different studies that followed about 9,751 patients after they were infected with COVID-19. The researchers discovered there were a number of common long COVID-19 symptoms, including fatigue, shortness of breath and “an inability to concentrate, often referred to as brain fog,” according to CNN.

Dr. Anthony Fauci, the director of the National Institute for Allergy and Infectious Diseases, told CNN in May that the vaccines may have a chance to stop long COVID-19 symptoms.