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Outcomes of prevention of mother to child transmission of the human immunodeficiency virus-1 in rural Kenya - A cohort study Infectious Disease epidemiology

Abstract:
Background
Success in prevention of mother-to-child transmission (PMTCT) raises the prospect of eliminating pediatric HIV infection. To achieve global elimination, however, strategies are needed to strengthen PMTCT interventions. This study aimed to determine PMTCT outcomes and identify challenges facing its successful implementation in a rural setting in Kenya.

Methods
A retrospective cohort design was used. Routine demographic and clinical data for infants and mothers enrolling for PMTCT care at a rural hospital in Kenya were analysed. Cox and logistic regression were used to determine factors associated with retention and vertical transmission respectively.

Results
Between 2006 and 2012, 1338 infants were enrolled and followed up for PMTCT care with earlier age of enrollment and improved retention observed over time. Mother to child transmission of HIV declined from 19.4 % in 2006 to 8.9 % in 2012 (non-parametric test for trend p = 0.024). From 2009 to 2012, enrolling for care after 6 months of age, adjusted Odds Ratio [aOR]: 23.3 [95 % confidence interval (CI): 8.3–65.4], presence of malnutrition ([aOR]: 2.3 [95 % CI: 1.1–5.2]) and lack of maternal use of highly active antiretroviral therapy (HAART) (aOR: 6.5 [95 % CI: 1.4–29.4]) was associated with increased risk of HIV infection. Infant’s older age at enrollment, malnutrition and maternal HAART status, were also associated with drop out from care. Infants who were not actively followed up were more likely to drop out from care (adjusted Hazard Ratio: 6.6 [95 % CI: 2.9–14.6]).

Discussion
We report a temporal increase in the proportion of infants enrolling for PMTCT care before 3 months of age, improved retention in PMTCT and a significant reduction in the proportion of infants enrolled who became HIV-infected, emphasizing the benefits of PMTCT.

Conclusion
A simple set of risk factors at enrollment can identify mother-infant pairs most at risk of infection or drop out for targeted intervention.
Publication status:
Published
Peer review status:
Peer reviewed

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Files:
Publisher copy:
10.1186/s12889-015-2355-4

Authors

More by this author
Institution:
University of Oxford
Division:
MSD
Department:
NDM
Role:
Author


More from this funder
Funding agency for:
Urban, B
Hassan, A
Nduati, E
Berkley, J
Grant:
WT079082
WT089351MA
WT095068
WT083579MA


Publisher:
BioMed Central
Journal:
BMC Public Health More from this journal
Volume:
15
Issue:
1
Publication date:
2015-10-03
Acceptance date:
2010-09-25
DOI:
EISSN:
1471-2458


Keywords:
Pubs id:
pubs:571512
UUID:
uuid:fa5ea913-db29-40dd-8b07-e5cae2b0fba3
Local pid:
pubs:571512
Source identifiers:
571512
Deposit date:
2016-03-18
ARK identifier:

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