TY  - JOUR
EP  - S139
A1  - Hama, MK
A1  - Khan, D
A1  - Laouali, B
A1  - Okoi, C
A1  - Yam, A
A1  - Haladou, M
A1  - Worwui, A
A1  - Ndow, PS
A1  - Obama, RN
A1  - Mwenda, JM
A1  - Biey, J
A1  - Ntsama, B
A1  - Kwambana-Adams, BA
A1  - Antonio, M
A1  - Senghore, M
A1  - Usuf, E
A1  - Uzochukwu, E
A1  - Zaman, A
A1  - Gehre, F
A1  - Tientcheu, L
A1  - Mohammed, NI
A1  - Dube, F
A1  - Ndow, P
A1  - Sambou, S
A1  - Jarju, S
A1  - Khan, D
A1  - Chinelo, E
A1  - Bancroft, R
KW  - Infectious Diseases
KW  -  Microbiology
KW  -  meningitis
KW  -  Niger
KW  -  cerebrospinal fluid
KW  -  N. meningitidis
KW  -  S. pneumoniae
KW  -  HAEMOPHILUS-INFLUENZAE
KW  -  ANTIMICROBIAL RESISTANCE
KW  -  MENINGOCOCCAL SEROGROUP
KW  -  PHYLOGENETIC ANALYSIS
KW  -  DISEASE
KW  -  EPIDEMIC
KW  -  OUTBREAK
KW  -  NIAMEY
KW  -  ASSAY
KW  -  TOOL
IS  - S2
TI  - 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
Y1  - 2019/09/15/
VL  - 69
SP  - S133
N2  - Background:
Meningitis 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.

Methods:
Cerebrospinal 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.

Results:
The 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.

Conclusions:
Neisseria 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.
AV  - public
N1  - © The Author(s) 2019. Published by Oxford University Press for the Infectious Diseases Society of America.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.
ID  - discovery10120469
UR  - http://dx.doi.org/10.1093/cid/ciz598
PB  - OXFORD UNIV PRESS INC
JF  - Clinical Infectious Diseases
ER  -