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    Human Neonatal Rotavirus Vaccine (RV3-BB) Produces Vaccine Take Irrespective of Histo-Blood Group Antigen Status

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    Author
    Boniface, K; Byars, SG; Cowley, D; Kirkwood, CD; Bines, JE
    Date
    2020-04-01
    Source Title
    Journal of Infectious Diseases
    Publisher
    OXFORD UNIV PRESS INC
    University of Melbourne Author/s
    Byars, Sean; Kirkwood, Carl; Bines, Julie; Cowley, Daniel
    Affiliation
    Paediatrics (RCH)
    Melbourne School of Population and Global Health
    Metadata
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    Document Type
    Journal Article
    Citations
    Boniface, K., Byars, S. G., Cowley, D., Kirkwood, C. D. & Bines, J. E. (2020). Human Neonatal Rotavirus Vaccine (RV3-BB) Produces Vaccine Take Irrespective of Histo-Blood Group Antigen Status. JOURNAL OF INFECTIOUS DISEASES, 221 (7), pp.1070-1078. https://doi.org/10.1093/infdis/jiz333.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/251950
    DOI
    10.1093/infdis/jiz333
    Abstract
    BACKGROUND: VP4 [P] genotype binding specificities of rotaviruses and differential expression of histo-blood group antigens (HBGAs) between populations may contribute to reduced efficacy against severe rotavirus disease. P[6]-based rotavirus vaccines could broaden protection in such settings, particularly in Africa, where the Lewis-negative phenotype and P[6] rotavirus strains are common. METHODS: The association between HBGA status and G3P[6] rotavirus vaccine (RV3-BB) take was investigated in a phase 2A study of RV3-BB vaccine involving 46 individuals in Dunedin, New Zealand, during 2012-2014. FUT2 and FUT3 genotypes were determined from DNA extracted from stool specimens, and frequencies of positive cumulative vaccine take, defined as an RV3-BB serum immune response (either immunoglobulin A or serum neutralizing antibody) and/or stool excretion of the vaccine strain, stratified by HBGA status were determined. RESULTS: RV3-BB produced positive cumulative vaccine take in 29 of 32 individuals (91%) who expressed a functional FUT2 enzyme (the secretor group), 13 of 13 (100%) who were FUT2 null (the nonsecretor group), and 1 of 1 with reduced FUT2 activity (i.e., a weak secretor); in 37 of 40 individuals (93%) who expressed a functional FUT3 enzyme (the Lewis-positive group) and 3 of 3 who were FUT3 null (the Lewis-negative group); and in 25 of 28 Lewis-positive secretors (89%), 12 of 12 Lewis-positive nonsecretors (100%), 2 of 2 Lewis-negative secretors, and 1 of 1 Lewis-negative weak secretor. CONCLUSIONS: RV3-BB produced positive cumulative vaccine take irrespective of HBGA status. RV3-BB has the potential to provide an improved level of protection in settings where P[6] rotavirus disease is endemic, irrespective of the HBGA profile of the population.

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