Shams S, Mousavi Nasab SD, Heydari H, Tafaroji J, Ahmadi N, Shams Afzali E. Detection and characterization of rotavirus G and P types from children with acute gastroenteritis in Qom, central Iran.
GASTROENTEROLOGY AND HEPATOLOGY FROM BED TO BENCH 2020;
13:S128-S133. [PMID:
33585014 PMCID:
PMC7881410]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 12/21/2020] [Indexed: 11/18/2022]
Abstract
AIM
The aim of the study is to estimate the burden of Rotavirus gastroenteritis as well as predominant genotypes of Rotavirus among children less than 5 years of age referring to Pediatric University Hospital in Qom, Iran.
BACKGROUND
Gastroenteritis is the fourth most common cause of death and accounts for 16% of all deaths in children <5 years of age worldwide.
METHODS
During two years, 130 patients referring to a pediatric hospital were enrolled in this study. After RNA extraction, Rotaviruses were detected by the VP6 gene. Then, G-typing (G1, G2, G3, G4, G8, G9, and G12) and P-typing (P4, P6, and P8) were performed using RT-PCR and specific primers.
RESULTS
The results of the PCR revealed that from a total of 130 patients, 22 cases (16.9%) showed positive VP6 by RT-PCR. G1 was mostly the predominant serotype (27%), accounting for 22% of all VP7-positive isolates, followed by G9 (18%), G2 (9%), G3 (9%), and G4 (9%). None of the strains revealed the presence of G8 genotype (0%), and 5 specimens (23%) were non-typable. The frequency of P typing was P8 (50%), P6 (23%), P4 (14%), and 3 samples were P-non-typable (13%), respectively. The dominant G-P combination was G1 [8] (32%).
CONCLUSION
Such studies based on typing methods assists in the Rotavirus vaccine introduction by policymakers and design of new effective vaccines.
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