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The short version: no study here gives a clean percentage of non-hospitalized people still symptomatic at 12+ months. The closest number is a pediatric cohort, and it is not the population you asked about.

The one record with a 12-month-plus figure for non-hospitalized people is a retrospective cohort of 125 survivors [3]. It reports that depression, cognitive deficit, tics, and impaired quality of life were still more common than in 347 controls beyond 12 months [3]. But it reports odds ratios, not the share of survivors still symptomatic [3]. It also splits people by time since infection rather than following the same person forward, so it cannot tell you what fraction stayed sick [3].

The pediatric cohort is the only one that puts a percentage on the 12-week mark: 44.5% of children had persistent symptoms after 12 weeks [1]. That is 12 weeks, not 12 months, and it is children, many of whom were hospitalized [1]. A Libyan survey found symptoms lasting up to a year in a small subset, but it does not report the share still sick at 12 months [2].

PopulationTimepointStill symptomatic
Children, mixedafter 12 weeks44.5% [1]
Non-hospitalized adults>12 monthsnot reported as a % [3]
Libyan survivorsup to 1 yearsubset only, no % [2]

My call: the honest answer is that the percentage you want is not in this evidence. The 12-month data shows elevated odds of specific symptoms, not a prevalence figure. Confidence: low, because the exact number was not measured in the studies in front of me.

Keep digging

Sources used 3

  1. Comparison of Persistent Symptoms After COVID-19 and Other Non-SARS-CoV-2 Infections in Children Frontiers in Pediatrics (2021) primary study Strong

    In a Latvian ambidirectional cohort, 70% of children with COVID-19 reported at least one persistent symptom, and several symptoms were significantly more common in COVID-19 than in non-SARS-CoV-2 infections, indicating symptom persistence is more evident with COVID-19.

    DOI: 10.3389/fped.2021.752385
  2. Post-COVID-19 Syndrome: Assessment of Short and Long-Term Post-Recovery Symptoms In Recovered Cases In Western Libya Attahadi Medical Journal (2025) primary study Strong

    In a cross-sectional survey of 515 COVID-19 survivors in western Libya, 72% reported persistent post-recovery symptoms, with longer symptom duration and higher prevalence associated with older age and comorbidities.

    DOI: 10.69667/amj.25317
  3. New symptoms and prevalence of postacute COVID-19 syndrome among nonhospitalized COVID-19 survivors Scientific Reports (2022) primary study Strong

    In nonhospitalized COVID-19 survivors, PTSD, anxiety, depression, cognitive deficit, and tics were more prevalent than in controls, with some symptoms peaking at 6-12 months; vaccination was associated with lower cognitive deficit and quality-of-life impairment.

    DOI: 10.1038/s41598-022-21289-y

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