Abstract:
:RotaTeq (RV5) is a widely used live attenuated pentavalent rotavirus (RV) vaccine. Although fecal shedding of RV vaccine strains persists for long time periods, it is unclear how each vaccine strain replicates in intestinal tissue and is excreted in stool. To examine this issue, we established RV5 genotype-specific real-time reverse transcription-PCR (RT-PCR) assays. Five real-time RT-PCR assays were designed for the VP7 gene in genotypes G1, G2, G3, G4, and G6. All assays exhibited excellent linearity, and the detection limit was 1 infectious unit (IU)/reaction for G2, G4, and G6 and 10 IUs/reaction for G1 and G3. No cross-reactivity was observed among G genotypes. The inter- and intra-assay coefficients of variation were less than 3%. The assays were used to examine 129 stool samples collected from eight infants who received RV5. In cases 1 and 2, who received three rounds of vaccination, RV shedding decreased gradually with the number of vaccinations. G1 and G6 shedding appeared to be predominant in comparison to shedding of the other genotypes. Patterns of fecal shedding of the five genotypes of vaccine viruses differed between the eight vaccine recipients. RV5 genotype-specific real-time RT-PCR assays will be useful to study the molecular biology of RV5 replication in infants and experimental animals.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Higashimoto Y,Ihira M,Miyazaki Y,Kuboshiki A,Yoshinaga S,Hiramatsu H,Suzuki R,Miyata M,Miura H,Komoto S,Yukitake J,Taniguchi K,Kawamura Y,Yoshikawa Tdoi
10.1128/JCM.00035-18subject
Has Abstractpub_date
2018-05-25 00:00:00issue
6eissn
0095-1137issn
1098-660Xpii
JCM.00035-18journal_volume
56pub_type
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