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Kinetics of the neutralizing antibody response to respiratory syncytial virus infections in a birth cohort
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Sande, Charles J., Mutunga, M. N., Okiro, Emelda A., Medley, Graham, Cane, Patricia and Nokes, D. James (2013) Kinetics of the neutralizing antibody response to respiratory syncytial virus infections in a birth cohort. Journal of Medical Virology, Volume 85 (Number 11). pp. 2020-2025. doi:10.1002/jmv.23696
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Official URL: http://dx.doi.org/10.1002/jmv.23696
Abstract
The kinetics of respiratory syncytial virus (RSV) neutralizing antibodies following birth, primary and secondary infections are poorly defined. The aims of the study were to measure and compare neutralizing antibody responses at different time points in a birth cohort followed-up over three RSV epidemics. Rural Kenyan children, recruited at birth between 2002 and 2003, were monitored for RSV infection over three epidemic seasons. Cord and 3-monthly sera, and acute and convalescent sera following RSV infection, were assayed in 28 children by plaque reduction neutralization test (PRNT). Relative to the neutralizing antibody titers of pre-exposure control sera (1.8 log10 PRNT), antibody titers following primary infection were (i) no different in sera collected between 0 and 0.4 months post-infection (1.9 log10 PRNT, P = 0.146), (ii) higher in sera collected between 0.5 and 0.9 (2.8 log10 PRNT, P < 0.0001), 1.0–1.9 (2.5 log10 PRNT, P < 0.0001), and 2.0–2.9 (2.3 log10 PRNT, P < 0.001) months post-infection, and (iii) no different in sera collected at between 3.0 and 3.9 months post-infection (2.0 log10 PRNT, P = 0.052). The early serum neutralizing response to secondary infection (3.02 log10 PRNT) was significantly greater than the early primary response (1.9 log10 PRNT, P < 0.0001). Variation in population-level virus transmission corresponded with changes in the mean cohort-level neutralizing titers. It is concluded that following primary RSV infection the neutralizing antibody response declines to pre-infection levels rapidly (∼3 months) which may facilitate repeat infection. The kinetics of the aggregate levels of acquired antibody reflect seasonal RSV occurrence, age, and infection history.
| Item Type: | Journal Article | ||||
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| Subjects: | Q Science > QR Microbiology Q Science > QR Microbiology > QR180 Immunology R Medicine > R Medicine (General) |
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| Divisions: | Faculty of Science > Life Sciences (2010- ) | ||||
| Library of Congress Subject Headings (LCSH): | Immunoglobulins , Respiratory syncytial virus, Respiratory syncytial virus -- Kenya | ||||
| Journal or Publication Title: | Journal of Medical Virology | ||||
| Publisher: | John Wiley & Sons, Inc. | ||||
| ISSN: | 0146-6615 | ||||
| Official Date: | November 2013 | ||||
| Dates: |
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| Date of first compliant deposit: | 25 December 2015 | ||||
| Volume: | Volume 85 | ||||
| Number: | Number 11 | ||||
| Page Range: | pp. 2020-2025 | ||||
| DOI: | 10.1002/jmv.23696 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Open Access |
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