Evaluation of the effect of maternally derived antibody on response to MMR vaccine in Thai infants

Hu, S., Logan, N., Puenpa, J., Wanlapakorn, N., Vongpunsawad, S., Poovorawan, Y., Willett, B. J. and Hosie, M. J. (2022) Evaluation of the effect of maternally derived antibody on response to MMR vaccine in Thai infants. Vaccine, 40(10), pp. 1439-1447. (doi: 10.1016/j.vaccine.2022.01.049) (PMID:35135700) (PMCID:PMC8884255)

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Background: Although the number of measles cases declined globally in response to anti-measles immunisation campaigns, measles has re-emerged. A review of current vaccination policies is required to improve measles elimination strategies. Methods: A pseudotype-based virus neutralisation assay (PVNA) was used to measure neutralising antibody titres in serum samples collected from Thai infants at six timepoints before and after two-doses of MMR (1 & 2) vaccination (ClinicalTrials.gov no. NCT02408926). Vesicular stomatitis virus (VSV) luciferase pseudotypes bearing the haemaglutinin (H) and fusion (F) glycoproteins of measles virus (MeV) were prepared. Serial dilutions of serum samples were incubated with VSV (MeV) pseudotypes and plated onto HEK293-human SLAM1 cells; the neutralising antibody titre was defined as the dilution resulting in 90% reduction in luciferase activity. Results: Neutralising antibody titres in infants born with high levels of maternal immunity (H group) persisted at the time of the first MMR vaccination, and those infants did not respond effectively by developing protective titres. In contrast, infants with lower maternal immunity (L group) developed protective titres of antibody following vaccination. Responses to the second MMR vaccination were significantly higher (P = 0.0171, Wilcoxon signed-rank test) in the H group. The observed correlation between anti-MeV IgG level and neutralising antibody titre in Thai infants indicates the possibility of using rapid IgG testing as a surrogate measure for neutralising activity to define clinical protection levels within populations. Conclusion: These results demonstrate that varying the timing of the first MMR immunisation according to the level of acquired maternal immunity could increase vaccination immunogenicity and hence accelerate measles eradication.

Item Type:Articles
Additional Information:This study was supported by awards from the Department of Health, UK (to BJW and MJH), from the Center of Excellence in Clinical Virology, Faculty of Medicine, Chulalongkorn University, the National Systems Research Institute (NSRI) and the Thrasher Research Fund. NL and BJW were funded by the Biotechnology and Biological Sciences Research Council (BBSRC, BB/R004250/1) and SH was supported by a studentship from the Chinese Scholarship Council (CSC).
Glasgow Author(s) Enlighten ID:hu, siyuan and Hosie, Professor Margaret and Willett, Professor Brian and Logan, Miss Nicola
Authors: Hu, S., Logan, N., Puenpa, J., Wanlapakorn, N., Vongpunsawad, S., Poovorawan, Y., Willett, B. J., and Hosie, M. J.
College/School:College of Medical Veterinary and Life Sciences > School of Infection & Immunity > Centre for Virus Research
Journal Name:Vaccine
ISSN (Online):1873-2518
Published Online:05 February 2022
Copyright Holders:Copyright © 2022 Crown Copyright
First Published:First published in Vaccine 40(10): 1439-1447
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
301313Atypical bovine morbillivirus infections in the Serengeti ecosystemBrian WillettBiotechnology and Biological Sciences Research Council (BBSRC)BB/R004250/1III - Centre for Virus Research