Table 3.

Statements where consensus for inclusion in the definition is achieved or close to consensus and discussed at the consensus meeting

Statement	N (%) voting for inclusion	N (%) of CYP voting for inclusion	Decision
Testing
At least one positive COVID-19 test needed	17 (100)	6 (75)*	Include
Burden of symptoms
The young person has symptoms that continue or develop after COVID-19 which impact their physical, mental or social well-being	17 (100)	8 (100)	Include
The young person has symptoms that are interfering with some aspect of daily living (eg, school, work, home, relationships)	17 (100)	7 (100)*	Include
The impact of the symptoms on functioning is at least moderate	11 (65)	0 (0)	Exclude
Persisting physical symptoms
1 or more persisting physical symptoms	17 (100)	7 (88)*	Include
Duration
Persist for a minimum duration of 12 weeks after initial testing even if symptoms waxed and waned over that period	17 (100)	7 (88)*	Include
Persist for more than 3 months after initial testing and are from the list of common symptoms (ie, unusual tiredness, headaches, shortness of breath, loss of smell or taste, dizziness)	0 (0)	0 (0)	Exclude
Persist for more than 1 month after initial testing	0 (0)	0 (0)	Exclude
Tests to exclude other diseases
A negative glandular fever (monospot, antibody or EBV PCR) test	0 (0)	1 (13)	Exclude
A normal full blood count, CRP, ESR, urea and electrolytes, creatinine, calcium, liver function tests, random blood glucose	0 (0)	0 (0)	Exclude

*One CYP was unable to vote due to technical problems.

CRP, C reactive protein; CYP, children and young people; EBV PCR, Epstein Barr virus polymerase chain reaction.