Evidence map›Paper›PMID 39680297›Full record

ArticleInfectious diseases and therapy2025

Is a Consensus Case Definition for Viral Associated Lower Respiratory Tract Disease (LRTD) in Clinical Trials Possible?

S Elizabeth Williams, Bradford Gessner, Elizabeth Begier, Negar Aliabadi, Kumar Ilangovan, Luis Jodar, Cassandra Hall-Murray, Giovanni Checcucci Lisi, Edward Walsh

Abstract read
In one paragraph

Article in Infectious diseases and therapy, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

  1. Article
  2. Article
  3. Observational
  4. Review
  5. Review
  6. Review
  7. [Recommendations on prevention and treatment of respiratory infections in institutionalised older people].Revista espanola de quimioterapia : publicacion oficial de la Sociedad Espanola de Quimioterapia · 2025
    Review
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

9 authors.

S Elizabeth WilliamsVaccines Medical Development, Scientific and Clinical Affairs, Pfizer Inc., 500 Arcola Rd, Collegeville, PA, 19426, USA. elizabeth.williams@pfizer.com.ORCID http://orcid.org/0000-0001-5867-8162
Bradford GessnerVaccines Medical Development, Scientific and Clinical Affairs, Pfizer Inc., 500 Arcola Rd, Collegeville, PA, 19426, USA.
Elizabeth BegierPfizer Vaccines, 9 Riverwalk, Citywest Business Campus, Dublin 24, Ireland.
Negar AliabadiPfizer Inc., 66 Hudson Blvd E, New York, NY, 10001, USA.
Kumar IlangovanPfizer Inc., 66 Hudson Blvd E, New York, NY, 10001, USA.
Luis JodarPfizer Inc., 66 Hudson Blvd E, New York, NY, 10001, USA.
Cassandra Hall-MurrayVaccines Medical Development, Scientific and Clinical Affairs, Pfizer Inc., 500 Arcola Rd, Collegeville, PA, 19426, USA.
Giovanni Checcucci LisiPfizer Italia Srl, Via Valbondione, 113, 00188, Rome, RM, Italy.
Edward WalshUniversity of Rochester Medical Center, New York, NY, USA.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Lower respiratory tract illness or disease (LRTI/LRTD) represents a significant source of morbidity and mortality following viral respiratory illnesses, yet a consensus definition for this outcome is lacking. Recent studies of novel vaccines against respiratory syncytial virus (RSV) for older adults used LRTI/LRTD as the primary outcome to assess vaccine efficacy. However, the different vaccine trials have used highly variable criteria to define this outcome, leading to difficulty in comparison of vaccine efficacy results between trials. Here we review the key differences in criteria for case definitions, highlight strategies to best approximate compatibility between definitions, and review vaccine efficacy results among currently US Food and Drug Administration (FDA)-approved vaccines using these strategies. We hope this overview will support the need to develop a consensus definition for LRTI/LRTD to improve future research related to viral respiratory disease.

Indexed as

AdultsClinical case definitionLower respiratory tract diseaseLower respiratory tract illnessRespiratory syncytial virusVaccine

Identifiers

PMID39680297
PMCPMC11782759

What OpenQuestion holds

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Registered trials

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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.