Evidence map›Paper›PMID 39013016›Full record

ArticleThe Journal of infectious diseases2025

Pneumococcal Carriage and Disease in Adults in England, 2011-2019: The Importance of Adults as a Reservoir for Pneumococcus in Communities.

Dima El Safadi, Lisa Hitchins, Ashleigh Howard, Parvinder Aley, Jaclyn Bowman, Marta Bertran, Andrea Collins, Rachel Colin-Jones, Filora Elterish, Norman K Fry and 26 more

Abstract read
In one paragraph

Article in The Journal of infectious diseases, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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

6 citing papers in PubMed.

  1. Article
  2. Article
  3. Recommendations on PCV20 vaccine in adults and at-risk populations.European respiratory review : an official journal of the European Respiratory Society · 2025
    Review
  4. Article
  5. Article
  6. 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

36 authors.

Dima El SafadiDepartment of Clinical Sciences, Liverpool School of Tropical Medicine.
Lisa HitchinsDepartment of Clinical Sciences, Liverpool School of Tropical Medicine.
Ashleigh HowardDepartment of Clinical Sciences, Liverpool School of Tropical Medicine.ORCID 0000-0002-7627-6228
Parvinder AleyOxford Vaccine Group, Department of Paediatrics, University of Oxford.
Jaclyn BowmanOxford Vaccine Group, Department of Paediatrics, University of Oxford.
Marta BertranImmunisations and Vaccine Preventable Diseases, UK Health Security Agency, London.
Andrea CollinsDepartment of Clinical Sciences, Liverpool School of Tropical Medicine.
Rachel Colin-JonesOxford Vaccine Group, Department of Paediatrics, University of Oxford.
Filora ElterishOxford Vaccine Group, Department of Paediatrics, University of Oxford.
Norman K FryImmunisations and Vaccine Preventable Diseases, UK Health Security Agency, London.
Stephen S GordonDepartment of Clinical Sciences, Liverpool School of Tropical Medicine.
Kate GouldInstitute for Infection and Immunity, St George's University, London.
Jason HindsInstitute for Infection and Immunity, St George's University, London.
Emilie HornDepartment of Clinical Sciences, Liverpool School of Tropical Medicine.
Angela Hyder-WrightDepartment of Clinical Sciences, Liverpool School of Tropical Medicine.
Rama KandasamyOxford Vaccine Group, Department of Paediatrics, University of Oxford.
Shamez LadhaniImmunisations and Vaccine Preventable Diseases, UK Health Security Agency, London.
David LittImmunisations and Vaccine Preventable Diseases, UK Health Security Agency, London.
Elena MitsiDepartment of Clinical Sciences, Liverpool School of Tropical Medicine.
Annabel MurphyDepartment of Clinical Sciences, Liverpool School of Tropical Medicine.
Andrew J PollardOxford Vaccine Group, Department of Paediatrics, University of Oxford.
Emma PlestedOxford Vaccine Group, Department of Paediatrics, University of Oxford.
Sherin PojarDepartment of Clinical Sciences, Liverpool School of Tropical Medicine.
Helen RatcliffeOxford Vaccine Group, Department of Paediatrics, University of Oxford.
Maria C RobertsonDepartment of Clinical Sciences, Liverpool School of Tropical Medicine.
Hannah RobinsonOxford Vaccine Group, Department of Paediatrics, University of Oxford.
Matthew D SnapeOxford Vaccine Group, Department of Paediatrics, University of Oxford.
Carla SolórzanoDepartment of Clinical Sciences, Liverpool School of Tropical Medicine.
Merryn VoyseyOxford Vaccine Group, Department of Paediatrics, University of Oxford.ORCID 0000-0001-6324-6559
Elizabeth BegierPfizer Vaccines, Pfizer Inc, Collegeville, Pennsylvania.ORCID 0000-0002-1287-5416
Julie CatussePfizer Vaccines, Pfizer Inc, Collegeville, Pennsylvania.
Maria LahuertaPfizer Vaccines, Pfizer Inc, Collegeville, Pennsylvania.
Christian TheilackerPfizer Vaccines, Pfizer Inc, Collegeville, Pennsylvania.ORCID 0000-0003-0821-9202
Bradford D GessnerPfizer Vaccines, Pfizer Inc, Collegeville, Pennsylvania.ORCID 0000-0002-6216-7194
Karen S TileyOxford Vaccine Group, Department of Paediatrics, University of Oxford.ORCID 0000-0003-2125-4125
Daniela M FerreiraDepartment of Clinical Sciences, Liverpool School of Tropical Medicine.ORCID 0000-0002-4017-5425

Funding

National Institute for Health and Care ResearchNIHR Clinical Research Network Thames Valley and South MidlandsOxford Biomedical Research CentrePfizerUniversity of Oxford
6 · The paper itself

Abstract

backgroundPneumococcal carriage in healthy adults and its relationship to invasive pneumococcal disease (IPD) is not well understood.

methodsNasal wash samples from adults without close contact with young children (Liverpool, UK), 2011-2019, were cultured, and culture-negative samples tested by polymerase chain reaction (PCR). Pneumococcal carriage in adults 18-44 years was compared with carriage among pneumococcal conjugate vaccine-vaccinated children aged 13-48 months (nasopharyngeal swabs, Thames Valley, UK) and national IPD data, 2014-2019. Age group-specific serotype invasiveness was calculated and used with national IPD data to estimate carriage serotype distributions for ≥65 years.

resultsOverall, 98 isolates (97 carriers) were identified (3 solely by PCR) from 1631 ≥18 years adults (standardized carriage prevalence 6.4%). Despite different carriage and IPD serotype distributions between adults and children, serotype invasiveness was highly correlated (R = 0.9). Serotypes 3, 37, and 8 represented a higher proportion of adult carriage than expected. Predicted carriage serotype distributions for ≥65 years aligned closest with the young adult carriage serotype distribution.

conclusionsNasal wash technique is highly sensitive. For some serotypes carried by adults aged ≥65 years, other adults may be an important reservoir for transmission. Age groups such as older children should also be considered.

Indexed as

Carrier StateDisease ReservoirsPneumococcal InfectionsStreptococcus pneumoniaeAdolescentAdultAgedChild, PreschoolEnglandFemaleHumansInfantMaleMiddle AgedNasopharynxPneumococcal VaccinesPneumococcal Vaccinesadultscarriageinvasive pneumococcal diseasepneumococcaltransmission

Identifiers

PMID39013016
PMCPMC11793058

What Socratic holds

Textmetadata
LicenceCC BY
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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 Socratic graph.