J Korean Med Sci.  2015 Oct;30(10):1471-1475. 10.3346/jkms.2015.30.10.1471.

Detection of Rotavirus Genotypes in Korea 5 Years after the Introduction of Rotavirus Vaccines

• Chung JY
• Kim MS
• Jung TW
• Kim SJ
• Kang JH
• Han SB
• Kim SY
• Rhim JW
• Kim HM
• Park JH
• Jo DS
• Ma SH
• Jeong HS
• Cheon DS
• Kim JH

• KMID: 2344181
• DOI: http://doi.org/10.3346/jkms.2015.30.10.1471

Abstract

Rotavirus (RV) is one of the most important viral etiologic agents of acute gastroenteritis (AGE) in children. Although effective RV vaccines (RVVs) are now used worldwide, novel genotypes and outbreaks resulting from rare genotype combinations have emerged. This study documented RV genotypes in a Korean population of children with AGE 5 yr after the introduction of RVV and assessed potential genotype differences based on vaccination status or vaccine type. Children less than 5-yr-old diagnosed with AGE between October 2012 and September 2013 admitted to 9 medical institutions from 8 provinces in Korea were prospectively enrolled. Stool samples were tested for RV by enzyme immunoassay and genotyped by multiplex reverse-transcription polymerase chain reaction. In 346 patients, 114 (32.9%) were RV-positive. Among them, 87 (76.3%) patients were infected with RV alone. Eighty-six of 114 RV-positive stool samples were successfully genotyped, and their combinations of genotypes were G1P[8] (36, 41.9%), G2P[4] (12, 14.0%), and G3P[8] (6, 7.0%). RV was detected in 27.8% of patients in the vaccinated group and 39.8% in the unvaccinated group (P=0.035). Vaccination history was available for 67 of 86 cases with successfully genotyped RV-positive stool samples; RotaTeq (20, 29.9%), Rotarix (7, 10.4%), unvaccinated (40, 59.7%). The incidence of RV AGE is lower in the RV-vaccinated group compared to the unvaccinated group with no evidence of substitution with unusual genotype combinations.

Keyword

Rotavirus; Vaccine; Genotype; Children; Gastroenteritis; Feces

MeSH Terms

Child, Preschool
Feces/virology
Gastroenteritis/immunology/prevention & control/virology
Genotype
Humans
Infant
*Mass Vaccination
RNA, Viral/genetics
Republic of Korea
Reverse Transcriptase Polymerase Chain Reaction
Rotavirus/*classification/*genetics/isolation & purification
Rotavirus Infections/immunology/*prevention & control/virology
Rotavirus Vaccines/*immunology
Vaccines, Attenuated/immunology
RNA, Viral
Rotavirus Vaccines
Vaccines, Attenuated

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