Evidence map›Paper›PMID 31505636›Full record

ArticleClinical infectious diseases : an official publication of the Infectious Diseases Society of America2019

Pediatric Bacterial Meningitis Surveillance in Niger: Increased Importance of Neisseria meningitidis Serogroup C, and a Decrease in Streptococcus pneumoniae Following 13-Valent Pneumococcal Conjugate Vaccine Introduction.

Mamadou Kourna Hama, Dam Khan, Boubou Laouali, Catherine Okoi, Abdoulaye Yam, Moussa Haladou, Archibald Worwui, Peter Sylvanus Ndow, Ricardo Nse Obama, Jason M Mwenda and 4 more

Open access · hybridAbstract read
In one paragraph

Article in Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 20% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 citations in OpenAlex.

  1. Molecular Epidemiology ofInternational journal of molecular sciences · 2025
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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

14 authors at 6 institutions in 5 countries.

Mamadou Kourna HamaLaboratoire Hopital National de Niamey, Niger.
Dam KhanWorld Health Organization (WHO) Collaborating Centre for New Vaccines Surveillance, Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, United Kingdom.
Boubou LaoualiLaboratoire Hopital National de Niamey, Niger.
Catherine OkoiWorld Health Organization (WHO) Collaborating Centre for New Vaccines Surveillance, Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, United Kingdom.
Abdoulaye YamWHO Country Office, Niamey, Niger.
Moussa HaladouWHO Country Office, Niamey, Niger.
Archibald WorwuiWorld Health Organization (WHO) Collaborating Centre for New Vaccines Surveillance, Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, United Kingdom.
Peter Sylvanus NdowWorld Health Organization (WHO) Collaborating Centre for New Vaccines Surveillance, Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, United Kingdom.
Ricardo Nse ObamaWHO Country Office, Niamey, Niger.
Jason M MwendaWHO Regional Office for Africa, Brazzaville, Republic of Congo.
Joseph BieyWHO Regional Office for Africa, Brazzaville, Republic of Congo.
Bernard NtsamaWHO Intercountry Support Team for West Africa, Ouagadougou, Burkina Faso.
Brenda A Kwambana-AdamsWorld Health Organization (WHO) Collaborating Centre for New Vaccines Surveillance, Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, United Kingdom.
Martin AntonioWorld Health Organization (WHO) Collaborating Centre for New Vaccines Surveillance, Medical Research Council Unit The Gambia at the London School of Hygiene and Tropical Medicine, United Kingdom.
Medical Research Council · GBMRC Unit the Gambia · GMUnited Nations Children's Fund Niger · NENational Hospital Niamey · NEWorld Health Organization Regional Office for Africa · CGUnion Economique et Monétaire Ouest Africaine · BF

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMeningitis is endemic in Niger. Haemophilus influenzae type b (Hib) vaccine and the 13-valent pneumococcal conjugate vaccine (PCV13) were introduced in 2008 and 2014, respectively. Vaccination campaign against Neisseria meningitidis serogroup A was carried out in 2010-2011. We evaluated changes in pathogen distribution using data from hospital-based surveillance in Niger from 2010 through 2016.

methodsCerebrospinal fluid (CSF) specimens from children <5 years old with suspected meningitis were tested to detect vaccine-preventable bacterial pathogens. Confirmatory identification and serotyping/grouping of Streptococcus pneumoniae, N. meningitidis, and H. influenzae were done. Antimicrobial susceptibility testing and whole genome sequencing were performed on S. pneumoniae isolates.

resultsThe surveillance included 2580 patients with suspected meningitis, of whom 80.8% (2085/2580) had CSF collected. Bacterial meningitis was confirmed in 273 patients: 48% (131/273) was N. meningitidis, 45% (123/273) S. pneumoniae, and 7% (19/273) H. influenzae. Streptococcus pneumoniae meningitis decreased from 34 in 2014, to 16 in 2016. PCV13 serotypes made up 88% (7/8) of S. pneumoniae meningitis prevaccination and 20% (5/20) postvaccination. Neisseria meningitidis serogroup C (NmC) was responsible for 59% (10/17) of serogrouped N. meningitidis meningitis. Hib caused 67% (2/3) of the H. influenzae meningitis isolates serotyped. Penicillin resistance was found in 16% (4/25) of S. pneumoniae isolates. Sequence type 217 was the most common lineage among S. pneumoniae isolates.

conclusionsNeisseria meningitidis and S. pneumoniae remain important causes of meningitis in children in Niger. The decline in the numbers of S. pneumoniae meningitis post-PCV13 is encouraging and should continue to be monitored. NmC is the predominant serogroup causing N. meningitidis meningitis.

Indexed as

Child, PreschoolFemaleHaemophilus influenzaeHospitalsHumansImmunization ProgramsInfantInfant, NewbornMaleMeningitis, BacterialNeisseria meningitidis, Serogroup CNigerPneumococcal VaccinesPopulation SurveillanceSerogroupSerotyping13-valent pneumococcal vaccinePneumococcal Vaccinescerebrospinal fluidmeningitisNigerN. meningitidisS. pneumoniae

Identifiers

PMID31505636
PMCPMC6761310
OpenAlexW2971545637

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.