The Library
Quantifying maternally derived respiratory syncytial virus specific neutralising antibodies in a birth cohort from coastal Kenya
Tools
Tools
Tools
Nyiro, Joyce U., Sande, Charles, Mutunga, Martin, Kiyuka, Patience K., Munywoki, Patrick K., Scott, J. Anthony G. and Nokes, D. James (2015) Quantifying maternally derived respiratory syncytial virus specific neutralising antibodies in a birth cohort from coastal Kenya. Vaccine, 33 (15). pp. 1797-1801. doi:10.1016/j.vaccine.2015.02.039
Research output not available from this repository, contact author.
Official URL: http://dx.doi.org/10.1016/j.vaccine.2015.02.039
Abstract
Background:
Severe respiratory syncytial virus (RSV) disease occurs predominantly in children under 6 months of age. There is no licensed RSV vaccine. Protection of young infants could be achieved by a maternal vaccine to boost titres of passively transferred protective antibodies. Data on the level and kinetics of functional RSV-specific antibody at birth and over the early infant period would inform vaccine product design.
Methods:
From a birth cohort study (2002–2007) in Kilifi, Kenya, 100 participants were randomly selected for whom cord blood and 2 subsequent 3-monthly blood samples within the first year of life, were available. RSV antibodies against the A2 strain of RSV were assayed and recorded as the logarithm (base 2) plaque reduction neutralisation test (PRNT) titre. Analysis by linear regression accounted for within-person clustering.
Results:
The geometric mean neutralisation antibody titre was 10.6 (SD: 1.13) at birth with a log-linear decay over the first 6 months of life. The estimated rate of decay was −0.58 (SD: 0.20) log2PRNT titre per month and a half-life of 36 days. There was no significant interaction between cord titre and rate of decay with age. Mean cord titres rose and fell in a pattern temporally tracking community virus transmission.
Conclusions:
In this study population, RSV neutralising antibody titres decay approximately two-fold every one month. The rate of decay varies widely by individual but is not related to titre at birth. RSV specific cord titres vary seasonally, presumably due to maternal boosting.
| Item Type: | Journal Article | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science > Life Sciences (2010- ) | ||||||||||
| Journal or Publication Title: | Vaccine | ||||||||||
| Publisher: | Elsevier Ltd. | ||||||||||
| ISSN: | 0264-410X | ||||||||||
| Official Date: | April 2015 | ||||||||||
| Dates: |
|
||||||||||
| Volume: | 33 | ||||||||||
| Number: | 15 | ||||||||||
| Page Range: | pp. 1797-1801 | ||||||||||
| DOI: | 10.1016/j.vaccine.2015.02.039 | ||||||||||
| Status: | Peer Reviewed | ||||||||||
| Publication Status: | Published | ||||||||||
| Access rights to Published version: | Open Access |
Request changes or add full text files to a record
Repository staff actions (login required)
 |
View Item |
