Evidence map›Paper›PMID 28081446›Full record

ArticleCell host & microbe2017

Host-to-Host Transmission of Streptococcus pneumoniae Is Driven by Its Inflammatory Toxin, Pneumolysin.

M Ammar Zafar, Yang Wang, Shigeto Hamaguchi, Jeffrey N Weiser

Open access · bronzeAbstract read
In one paragraph

Article in Cell host & microbe, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 88 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
88citing papers in PubMed, 1 pooled it
11.4field-weighted citation impact, top 1% of its field
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

88 citing papers in PubMed, 1 synthesis or guideline pooled it, 134 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Influenza A Virus Coinfection AltersbioRxiv : the preprint server for biology · 2026
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Bacterial and host factors affecting acquisition ofbioRxiv : the preprint server for biology · 2026
    Article
  11. Article
  12. Review
  13. Mechanisms of bacterial host-to-host transmission.Microbiology and molecular biology reviews : MMBR · 2025
    Review
  14. Article
  15. Review
  16. Article
  17. Article
  18. Comparative analysis of theFrontiers in microbiology · 2025
    Article
  19. Article
  20. Article

28 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 1 institution in 2 countries.

M Ammar ZafarDepartment of Microbiology, New York University, New York, NY 10016, USA.
Yang WangSchool of Medicine, Tsinghua University, 100084 Beijing, China; Department of Microbiology, New York University, New York, NY 10016, USA.
Shigeto HamaguchiDepartment of Microbiology, New York University, New York, NY 10016, USA.
Jeffrey N WeiserDepartment of Microbiology, New York University, New York, NY 10016, USA. Electronic address: jeffrey.weiser@nyumc.org.
New York University · US

Funding

ROLE OF OPACITY VARIATION IN PNEUMOCOCCAL PATHOGENESISR01AI038446 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI WEISER, JEFFREY NEAL · 1996 to 2019
$7.4M
Mechanisms of Pneumococcal Persistence During CarriageR37AI038446 · NIAID · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI Jeffrey Neal Weiser · 2020 to 2026
$3.8M
Early Events in Pneumococcal ColonizationR01AI105168 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI WEISER, JEFFREY NEAL · 2014 to 2018
$2.1M
NIAID NIH HHS R01 AI038446NIAID NIH HHS R01 AI105168NIAID NIH HHS R37 AI038446
6 · The paper itself

Abstract

Host-to-host transmission is a critical step for infection. Here we studied transmission of the opportunistic pathogen Streptococcus pneumoniae in an infant mouse model. Transmission from nasally colonized pups required high levels of bacterial shedding in nasal secretions and was temporally correlated with, and dependent upon, the acute inflammatory response. Pneumolysin, a pore-forming cytotoxin and major virulence determinant, was both necessary and sufficient to promote inflammation, which increased shedding and allowed for intralitter transmission. Direct contact between pups was not required for transmission indicating the importance of an environmental reservoir. An additional in vivo effect of pneumolysin was to enhance bacterial survival outside of the host. Our findings provide experimental evidence of a microbial strategy for transit to new hosts and explain why an organism expresses a toxin that damages the host upon which it depends.

Indexed as

AnimalsBacterial LoadBacterial ProteinsDisease Models, AnimalInflammationMiceMice, Inbred C57BLMice, KnockoutPneumococcal InfectionsRespiratory SystemStreptococcus pneumoniaeStreptolysinsBacterial ProteinsplY protein, Streptococcus pneumoniaeStreptolysinsbacteriacolonizationinfectionpneumococcuspneumolysinsheddingtoxintransmission

Identifiers

PMID28081446
PMCPMC5267320
OpenAlexW2576639841

What OpenQuestion holds

Textmetadata
LicenceTDM
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.