New data suggest that most patients with COVID-19 who have lingering symptoms at 12 months are likely to still have symptoms at 18 months.
The findings are drawn from a large study of 33,281 people in Scotland who tested positive for the coronavirus. Most of the results are in line with those from earlier, smaller studies.
Among a subset of 197 survivors of symptomatic SARS-CoV-2 infections who completed surveys at 12 months and 18 months, most reported lingering symptoms at both time points, researchers reported in Nature Communications.
Rates of no recovery at 12 months were 11% with 51% partial recovery and 39% complete recovery. Rates at 18 months were 11% no recovery, 51% partial and 38% complete.
Asymptomatic infections were not associated with long COVID. But among the 31,486 people with symptomatic infections, nearly half reported incomplete recovery at six to 18 months.
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