Evidence map›Paper›PMID 27814682›Full record

ArticleBMC infectious diseases2016

Prevalence and epidemiology of meningococcal carriage in Southern Ethiopia prior to implementation of MenAfriVac, a conjugate vaccine.

Guro K Bårnes, Paul A Kristiansen, Demissew Beyene, Bereket Workalemahu, Paulos Fissiha, Behailu Merdekios, Jon Bohlin, Marie-Pierre Préziosi, Abraham Aseffa, Dominique A Caugant

Open access · goldAbstract read
In one paragraph

Article in BMC infectious diseases, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
3.1field-weighted citation impact, top 9% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

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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

10 authors at 5 institutions in 3 countries.

Guro K BårnesWHO Collaborating Center for Reference and Research on Meningococci, Norwegian Institute of Public Health, Oslo, Norway.
Paul A KristiansenWHO Collaborating Center for Reference and Research on Meningococci, Norwegian Institute of Public Health, Oslo, Norway.
Demissew BeyeneArmauer Hansen Research Institute, Addis Ababa, Ethiopia.
Bereket WorkalemahuArba Minch College of Health Sciences, Arba Minch, Ethiopia.
Paulos FissihaArba Minch General Hospital, Arba Minch, Ethiopia.
Behailu MerdekiosCollege of Medicine and Health Sciences, Arba Minch University, Arba Minch, Ethiopia.
Jon BohlinDepartment of Methodology Research and Analysis, Norwegian Institute of Public Health, Oslo, Norway.
Marie-Pierre PréziosiInitiative for Vaccine Research, World Health Organization, Geneva, Switzerland.
Abraham AseffaArmauer Hansen Research Institute, Addis Ababa, Ethiopia.
Dominique A CaugantWHO Collaborating Center for Reference and Research on Meningococci, Norwegian Institute of Public Health, Oslo, Norway. dominique.caugant@fhi.no.
Arba Minch University · ETArmauer Hansen Research Institute · ETNorwegian Institute of Public Health · NOUniversity of Oslo · NOWorld Health Organization · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNeisseria meningitidis colonizes humans and transmits mainly by asymptomatic carriage. We sought to determine the prevalence and epidemiology of meningococcal carriage in Ethiopia prior to the introduction of MenAfriVac, a serogroup A meningococcal conjugate vaccine.

methodsA cross-sectional meningococcal carriage study was conducted in Arba Minch, southern Ethiopia. A total of 7479 oropharyngeal samples were collected from 1 to 29 year old volunteers, between March and October, 2014. The swabs were cultured for N. meningitidis and Neisseria lactamica in Ethiopia. N. meningitidis isolates were confirmed and characterized by their serogroup, sequence type (ST) and PorA:FetA profile in Norway.

resultsOverall carriage prevalence was 6.6 %. There was no significant difference in overall carriage between male (6.7 %) and female (6.4 %) participants. Highest carriage prevalence (10.9 %) for females was found in the 15-19 years of age, while prevalence among males was highest (11.3 %) in the 20-24 age group. Non-groupable isolates dominated (76.4 %), followed by serogroups X (14.0 %) and W (5.9 %) isolates. No serogroup A was found. Most non-groupable isolates were ST-192. Serogroup W isolates were assigned to the ST-11 clonal complex, and serogroup X isolates to the ST-181 and ST-41/44 clonal complexes. Overall carriage prevalence of N. lactamica was 28.1 %. Carriage of N. meningitidis and N. lactamica varied depending on age and geographic area, but there was no association between carriage of the two species.

conclusionsEpidemic strains of serogroups W and X were circulating in this area of Ethiopia. As no serogroup A was found among the carriage isolates the immediate impact of mass-vaccination with MenAfriVac on transmission of N. meningitidis in this population is expected to be marginal.

Indexed as

AdolescentAdultBacterial Typing TechniquesCarrier StateChildChild, PreschoolCross-Sectional StudiesEthiopiaFemaleHumansInfantMaleMass VaccinationMeningococcal InfectionsMeningococcal VaccinesNeisseria meningitidisMenAfriVacMeningococcal VaccinesVaccines, ConjugateCarriageEthiopiaMenAfriVacMeningitis beltMLSTNeisseria lactamicaNeisseria meningitidis

Identifiers

PMID27814682
PMCPMC5097444
OpenAlexW2547641811

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.