Long COVID in Children: What the Research Shows

Long COVID hasn't been limited to adults and parents of children with lingering symptoms after COVID-19 have often found it harder to get clear answers than adults have. The world's largest study specifically tracking long COVID in children and young people, run through Great Ormond Street Hospital, has now provided some of the clearest long-term data available.

What counts as long COVID in children

Researchers define long COVID in children as having more than one ongoing symptom, such as tiredness, trouble sleeping, shortness of breath or headaches, alongside functional difficulties that affect daily life. This might include problems with mobility, self-care, being unable to do usual activities, ongoing pain or discomfort, or emotional distress. The emphasis on functional impact, not just the presence of symptoms, is an important part of how researchers distinguish long COVID from more minor, temporary after-effects.

The most common symptoms

Across studies, fatigue is by far the most commonly reported symptom, affecting the large majority of children with long COVID, followed by headache, exercise intolerance, dizziness, brain fog, shortness of breath, musculoskeletal pain and chest pain or palpitations. This pattern overlaps considerably with adult long COVID, though the specific combination and severity of symptoms varies between individual children.

How common is it?

Estimates vary depending on the study and time period, but research has suggested up to one in seven children and young people may have symptoms of long COVID around 15 weeks after infection, with roughly 10% experiencing symptoms lasting up to six months. These figures come with an important caveat: much of this research reflects earlier variants of the virus and patterns may differ somewhat with more recent strains.

The encouraging recovery data

The Great Ormond Street Hospital-led CLoCK study followed 943 young people who'd tested positive for COVID-19 over a two-year period. Of those who had long COVID symptoms at 3 months, over two-thirds, 70%, had recovered by the 24-month mark. Numbers with ongoing long COVID fell steadily over the study: from 233 children at 3 months, down to 135 at 6 months, 94 at 12 months and just 68, or 7.2% of the original cohort, still meeting the criteria at 24 months.

Who takes longer to recover

The research identified some clear patterns in who was less likely to have recovered by the two-year mark. Older teenagers recovered less frequently than younger children and young people from more disadvantaged socioeconomic backgrounds showed lower recovery rates too. Sex made a particularly notable difference: females were almost twice as likely as males to still meet the criteria for long COVID at 24 months.

What this means for worried parents

The overall picture from this research is genuinely reassuring for most families: the large majority of children with long COVID symptoms do recover over time, even when recovery takes many months rather than weeks. That said, a meaningful minority continue to have symptoms well beyond a year, which is a real and valid concern that shouldn't be dismissed, particularly for older teenage girls, who the data suggests face a somewhat harder recovery path on average.

When to seek help for your child

If your child has ongoing symptoms affecting their daily life, school attendance or wellbeing more than a few weeks after a COVID-19 infection, it's worth discussing this with your GP. Many areas have specific paediatric long COVID clinics or pathways and a GP can help access these where needed, alongside ruling out other possible causes for the symptoms your child is experiencing.

Supporting a child through a long recovery

A recovery that stretches across many months, or in some cases years, asks a lot of a child and of the whole family around them. Keeping open communication with your child's school is genuinely valuable, since many schools can offer flexibility around attendance, workload or exam arrangements once they understand a child is dealing with a diagnosed, ongoing health condition rather than simply missing school without explanation.

Pacing activity rather than alternating between pushing through on good days and complete rest on bad days is an approach that's increasingly recommended for long COVID recovery in both children and adults, since overexertion can sometimes trigger a temporary worsening of symptoms. A specialist long COVID service, where available, can help design a more structured, gradual approach tailored to your child's specific symptoms and their response to activity.

The emotional side for the whole family

Watching a child struggle with an illness that doctors can't always fully explain or quickly resolve is genuinely difficult for parents and it's worth acknowledging that this emotional toll is real too, not just the physical symptoms your child is experiencing. Support groups specifically for families dealing with paediatric long COVID exist and can offer both practical advice and the reassurance of connecting with other families navigating a similar, often isolating experience.

A quick recap

Long COVID does affect children, most commonly causing fatigue, headache and reduced exercise tolerance, but the largest study to date found 70% of children with symptoms at 3 months had recovered by 24 months. Older teenagers, girls and children from more disadvantaged backgrounds were somewhat less likely to have recovered within that timeframe, which is useful context for families navigating a longer recovery.

Frequently asked questions

Is long COVID in children as common as in adults?

Direct comparisons are difficult given differences in study design, but children generally appear to experience long COVID somewhat less frequently and often less severely than adults, though it's still a real and significant issue for a meaningful number of children.

Can very young children get long COVID?

Yes, though most detailed research has focused on school-aged children and teenagers, since younger children can find it harder to articulate symptoms like brain fog or fatigue in ways researchers can easily study.

Does vaccination reduce the risk of long COVID in children?

Evidence generally suggests vaccination reduces the risk of long COVID following infection, similar to the pattern seen in adults, by reducing the severity of the initial illness.

Should my child avoid school while recovering from long COVID?

This depends on individual severity and should be guided by your GP or a specialist long COVID service, since a gradual, supported return to normal activities is often part of the recovery approach rather than prolonged complete rest.

Does having long COVID as a child affect adult health later on?

Long-term data beyond the two-year mark is still being gathered, so it isn't yet possible to say definitively, though the strong recovery trend seen so far is a positive sign for most affected children.

Are there specific treatments for long COVID in children?

There's no single approved treatment specifically for paediatric long COVID; management generally focuses on symptom relief, careful gradual activity pacing over an extended period of time and addressing each individual symptom such as headaches, poor sleep quality or fatigue as they specifically arise for that particular child.

Can siblings compare notes if one child has long COVID and another doesn't?

Every child's experience with COVID-19 and recovery is genuinely individual, so it genuinely isn't unusual, or any kind of worrying sign, for two siblings to have very different individual experiences following what was ostensibly the exact same household infection event.