Evidence map›Paper›PMID 7927802›Full record

ArticleInfection and immunity1994

Construction and characterization of attenuated delta aroA delta virG Shigella flexneri 2a strain CVD 1203, a prototype live oral vaccine.

F R Noriega, J Y Wang, G Losonsky, D R Maneval, D M Hone, M M Levine

Abstract read
In one paragraph

Article in Infection and immunity, 1994. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing 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

29 citing papers in PubMed.

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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

6 authors.

F R NoriegaDepartment of Pediatrics, University of Maryland School of Medicine, Baltimore 21201.
J Y Wang
G Losonsky
D R Maneval
D M Hone
M M Levine

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We engineered an oral Shigella vaccine prototype that can invade intestinal epithelial cells but cannot undergo extensive intracellular replication or extend to adjacent epithelial cells. Strain CVD 1203, derived from wild-type Shigella flexneri 2a by introducing deletions in chromosomal aroA and invasion plasmid virG, was highly attenuated in the Sereny test. Two 10(9)-CFU orogastric doses (2 weeks apart) stimulated production of secretory immunoglobulin A antibodies to S. flexneri 2a and protected against conjunctival sac challenge with virulent S. flexneri 2a.

Indexed as

Administration, OralAnimalsBacterial VaccinesBase SequenceDNA PrimersGene DeletionGenes, BacterialGuinea PigsHeLa CellsHumansImmunoglobulin A, SecretoryKeratoconjunctivitisMolecular Sequence DataPlasmidsShigella flexneriVaccines, AttenuatedBacterial VaccinesDNA PrimersImmunoglobulin A, SecretoryVaccines, Attenuated

Identifiers

PMID7927802
PMCPMC303242

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.