HSR&D Citation Abstract
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Kim MH, Ahmed S, Hosseinipour MC, Giordano TP, Chiao EY, Yu X, Nguyen C, Chimbwandira F, Kazembe PN, Abrams EJ. Implementation and operational research: the impact of option B+ on the antenatal PMTCT cascade in Lilongwe, Malawi. Journal of acquired immune deficiency syndromes (1999). 2015 Apr 15; 68(5):e77-83.
In 2011, Malawi implemented Option B+ (B+), lifelong antiretroviral therapy (ART) for pregnant and breastfeeding women. We aimed to describe changes in service uptake and outcomes along the antenatal prevention of mother-to-child transmission (PMTCT) cascade post-B+ implementation.
Pre/post study using routinely collected program data from 2 large Lilongwe-based health centers.
We compared the testing of HIV-infected pregnant women at antenatal care, enrollment into PMTCT services, receipt of ART, and 6-month ART outcomes pre-B+ (October 2009-March 2011) and post-B+ (October 2011-March 2013).
A total of 13,926 (pre) and 14,532 (post) women presented to antenatal care. Post-B+, a smaller proportion were HIV-tested (99.3% vs. 87.7% post-B+; P < 0.0001). There were 1654 (pre) and 1535 (post) HIV-infected women identified, with a larger proportion already known to be HIV-infected (18.1% vs. 41.2% post-B+; P < 0.0001) and on ART post-B+ (18.7% vs. 30.2% post-B+; P < 0.0001). A significantly greater proportion enrolled into the PMTCT program (68.3% vs. 92.6% post-B+; P < 0.0001) and was retained through delivery post-B+ (51.1% vs. 65% post-B+; P < 0.0001). Among those not on ART at enrollment, there was no change in the proportion newly initiating ART/antiretrovirals (79% vs. 81.9% post-B+; P = 0.11), although median days to initiation of ART decreased [48 days (19, 130) vs. 0 days (0, 15.5) post-B+; P < 0.0001]. Among those newly initiating ART, a smaller proportion was alive on ART 6 months after initiation (89.3% vs. 78.8% post-B+; P = 0.0004).
Although several improvements in PMTCT program performance were noted with implementation of B+, challenges remain at several critical steps along the cascade requiring innovative solutions to ensure an AIDS-free generation.