TY - JOUR
T1 - Update of rotavirus strains circulating in Africa from 2007 through 2011
AU - Seheri, Mapaseka Luyanda
AU - Nemarude, Leah
AU - Peenze, Ina
AU - Netshifhefhe, Lufuno
AU - Nyaga, Martin M.
AU - Ngobeni, Harry G.
AU - Maphalala, Gugu
AU - Maake, Lorens L.
AU - Steele, Duncan
AU - Mwenda, Jason M.
AU - Mphahlele, Jeffrey M.
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014/1/8
Y1 - 2014/1/8
N2 - BACKGROUND:: The African Rotavirus Surveillance Network has been detecting and documenting rotavirus genotypes in the subcontinent since 1998, largely based on intercountry workshops conducted at Rotavirus Regional Reference Laboratories. This article reports on rotavirus genotypes generated at Regional Reference Laboratories, South Africa between 2007 and 2011 from 16 African countries. METHODS:: Stool samples were collected from <5-year-old children with diarrhea following World Health Organization criteria of hospital-based rotavirus surveillance. Enzyme immunoassay (EIA) was performed by National Laboratories. Regional Reference Laboratories retested 10% of randomly selected EIA positives and 10% of EIA negatives from each country as part of quality control. At least 50 rotavirus EIA positives from each country per year were subjected to reverse transcriptase polymerase chain reaction based on G-/P-types. Sequencing was conducted in 5-10% of each representative G or P genotype to confirm the genotype, as well as to type some of the samples that could not be genotyped with reverse transcriptase polymerase chain reaction-based methods. RESULTS:: A total of 2555 of rotavirus EIA positives were genotyped. G1 was the most predominant (28.8%), followed by G9 (17.3%), G2 (16.8%), G8 (8.2%), G12 (6.2%) and G3 (5.9%). Similarly, the P[8] strain was the most prevalent (40.6%), followed by P[6] (30.9%) and P[4] (13.9%). The top G/P combinations detected were G1P[8] (18.4%), G9P[8] (11.7%), G2P[4] (8.6%), G2P[6] (6.2%), G1P[6] (4.9%), G3P[6] (4.3%), G8P[6] (3.8%) and G12P[8] (3.1%). CONCLUSIONS:: There is high genetic diversity of rotavirus strains circulating in the subcontinent. Understanding the strain diversity pre-and postvaccine introduction are important in Africa to understand the broader impact of the rotavirus vaccines on regionally circulating strains. © 2013 Lippincott Williams and Wilkins.
AB - BACKGROUND:: The African Rotavirus Surveillance Network has been detecting and documenting rotavirus genotypes in the subcontinent since 1998, largely based on intercountry workshops conducted at Rotavirus Regional Reference Laboratories. This article reports on rotavirus genotypes generated at Regional Reference Laboratories, South Africa between 2007 and 2011 from 16 African countries. METHODS:: Stool samples were collected from <5-year-old children with diarrhea following World Health Organization criteria of hospital-based rotavirus surveillance. Enzyme immunoassay (EIA) was performed by National Laboratories. Regional Reference Laboratories retested 10% of randomly selected EIA positives and 10% of EIA negatives from each country as part of quality control. At least 50 rotavirus EIA positives from each country per year were subjected to reverse transcriptase polymerase chain reaction based on G-/P-types. Sequencing was conducted in 5-10% of each representative G or P genotype to confirm the genotype, as well as to type some of the samples that could not be genotyped with reverse transcriptase polymerase chain reaction-based methods. RESULTS:: A total of 2555 of rotavirus EIA positives were genotyped. G1 was the most predominant (28.8%), followed by G9 (17.3%), G2 (16.8%), G8 (8.2%), G12 (6.2%) and G3 (5.9%). Similarly, the P[8] strain was the most prevalent (40.6%), followed by P[6] (30.9%) and P[4] (13.9%). The top G/P combinations detected were G1P[8] (18.4%), G9P[8] (11.7%), G2P[4] (8.6%), G2P[6] (6.2%), G1P[6] (4.9%), G3P[6] (4.3%), G8P[6] (3.8%) and G12P[8] (3.1%). CONCLUSIONS:: There is high genetic diversity of rotavirus strains circulating in the subcontinent. Understanding the strain diversity pre-and postvaccine introduction are important in Africa to understand the broader impact of the rotavirus vaccines on regionally circulating strains. © 2013 Lippincott Williams and Wilkins.
KW - Africa
KW - genotypes
KW - rotavirus
KW - surveillance
KW - vaccine
UR - http://www.scopus.com/inward/record.url?scp=84891618695&partnerID=8YFLogxK
U2 - 10.1097/INF.0000000000000053
DO - 10.1097/INF.0000000000000053
M3 - Article
C2 - 24343619
SN - 0891-3668
VL - 33
SP - S76-S84
JO - Pediatric Infectious Disease Journal
JF - Pediatric Infectious Disease Journal
IS - SUPPL. 1
ER -