Evidence map›Paper›PMID 40211974›Full record

ArticleEuro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin2025

Investigation of an outbreak of novel hepatitis of unknown aetiology in children and adolescents, Ireland, 2021 to 2023.

Emer Liddy, Niamh Murphy, Jolita Mereckiene, Emer Fitzpatrick, Annemarie Broderick, Róisin Egan, Tiarnán Fallon Verbruggen, Julie-Anne Houlihan, Christine Campbell, Michael Carr and 6 more

Abstract read
In one paragraph

Article in Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

16 authors.

Emer LiddyHealth Protection Surveillance Centre (HPSC), Dublin, Ireland.
Niamh MurphyHealth Protection Surveillance Centre (HPSC), Dublin, Ireland.
Jolita MereckieneHealth Protection Surveillance Centre (HPSC), Dublin, Ireland.
Emer FitzpatrickDepartment of Paediatric GI, Liver and Nutrition, Children's Health Ireland, Crumlin, Dublin, Ireland.
Annemarie BroderickDepartment of Paediatric GI, Liver and Nutrition, Children's Health Ireland, Crumlin, Dublin, Ireland.
Róisin EganDepartment of Paediatric GI, Liver and Nutrition, Children's Health Ireland, Crumlin, Dublin, Ireland.
Tiarnán Fallon VerbruggenDepartment of Paediatric GI, Liver and Nutrition, Children's Health Ireland, Crumlin, Dublin, Ireland.
Julie-Anne HoulihanNational Virus Reference Laboratory, University College Dublin, Dublin, Ireland.
Christine CampbellNational Virus Reference Laboratory, University College Dublin, Dublin, Ireland.
Michael CarrInternational Collaboration Unit, International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan.
Gabriel GonzalezJapan Initiative for World-leading Vaccine Research and Development Centers, Hokkaido University, Institute for Vaccine Research and Development, Sapporo, Japan.
Jonathan DeanNational Virus Reference Laboratory, University College Dublin, Dublin, Ireland.
Richard HaganMolecular Biology and Genetics Department, Irish Blood Transfusion Service, Dublin, Ireland.
Cillian De GascunNational Virus Reference Laboratory, University College Dublin, Dublin, Ireland.
Suzanne CotterHealth Protection Surveillance Centre (HPSC), Dublin, Ireland.
Incident Management TeamThe members of the Incident Management Team are acknowledged at the end of the article.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

An outbreak of severe acute hepatitis of unknown aetiology in children (HUAC) was reported by the United Kingdom (UK) in spring 2022. Within days, a corresponding increase was identified in Ireland. A multi-agency incident management team (IMT), led by the Health Protection Surveillance Centre (HPSC), established a national case definition, trawling questionnaire, testing protocol and communications plan. Between 1 October 2021 and 12 May 2023, 44 probable and three possible cases of HUAC were identified in Ireland with a median age of 3 years. Adeno-associated virus 2 (AAV2), detected in 18 of 31 probable cases, and SARS-CoV-2 antibodies in 22 of 37 of probable cases were the most common infectious agents, followed by human herpes virus 7 (18/33) and adenovirus (20/44). Immunological findings included the human leukocyte antigen (HLA) class II

Indexed as

COVID-19Disease OutbreaksHepatitis, Viral, HumanAdolescentAntibodies, ViralChildChild, PreschoolFemaleHumansInfantIrelandMaleSARS-CoV-2United KingdomAntibodies, ViralAAV2adeno-associated virus 2adenovirusautoantibodiesHAdVHLApaediatric hepatitis

Identifiers

PMID40211974
PMCPMC11987496

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.