Long COVID risk worse after delta than omicron, data show

The risk of lingering symptoms after COVID-19 appears influenced by the strain of coronavirus that caused the infection, according to an analysis from the U.K., where an estimated 1.8 million people reported experiencing long COVID in early April.

The odds of reporting fatigue, shortness of breath, difficulty concentrating and other persistent symptoms were 50 percent lower following infections likely caused by the omicron BA.1 variant than those likely caused by the delta strain, the Office for National Statistics said in a report Friday. The difference was found only among adults who were double vaccinated when infected. Among those who were triple vaccinated, the difference wasn’t statistically significant.

Among triple vaccinated adults, the odds of reporting long COVID were higher following infection with the omicron BA.2 variant than the BA.1 variant, the analysis found.

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