Rotavirus genotype trends from 2013 to 2018 and vaccine effectiveness in southern Vietnam.
Int J Infect Dis
; 105: 277-285, 2021 Apr.
Article
en En
| MEDLINE
| ID: mdl-33596479
ABSTRACT
OBJECTIVES:
Rotavirus (RV) genotypes vary geographically, and this can affect vaccine effectiveness (VE). This study investigated the genotype distribution of RV and explored VE before introducing the RV vaccine to the national immunization programme in Vietnam.METHODS:
This hospital-based surveillance study was conducted at Children's Hospital 1, Ho Chi Minh City in 2013-2018. Stool samples and relevant data, including vaccination history, were collected from children aged <5 years who were hospitalized with gastroenteritis. RV was detected using enzyme immunoassays and then genotyped. Children aged ≥6 months were included in the VE analysis.RESULTS:
Overall, 5176 children were included in this study. RV was detected in 2421 children (46.8%). RV positivity decreased over the study period and was associated with age, seasonality, location and previous vaccination. Among 1105 RV-positive samples, G3P[8] was the most prevalent genotype (43.1%), followed by G8P[8] (19.7%), G1P[8] (12.9%) and G2P[4] (12.9%). Overall VE was 69.7% [95% confidence interval (CI) 53.3-80.6%] in fully vaccinated children and 58.6% (95% CI 44.1-69.4%) in children who had received at least one dose of RV vaccine. VE was highest for G3P[8] (95% CI 75.1-84.5%) and lowest for G2P[4] (95% CI 32.4-57.2%).CONCLUSIONS:
RV remains a major cause of acute gastroenteritis requiring hospitalization in southern Vietnam. The RV vaccine is effective, but its effectiveness varies with RV genotype.Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Contexto en salud:
1_ASSA2030
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2_ODS3
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3_ND
/
4_TD
Problema de salud:
1_doencas_transmissiveis
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2_enfermedades_transmissibles
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3_diarrhea
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4_diarrhoeal_infections
Asunto principal:
Vacunación
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Rotavirus
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Vacunas contra Rotavirus
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Genotipo
Límite:
Child
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Child, preschool
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Female
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Humans
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Infant
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Male
País/Región como asunto:
Asia
Idioma:
En
Revista:
Int J Infect Dis
Asunto de la revista:
DOENCAS TRANSMISSIVEIS
Año:
2021
Tipo del documento:
Article
País de afiliación:
Corea del Sur