Linking HIV-1 Transmission in Couples
Author Information
Author(s): Mary S. Campbell, James I. Mullins, Connie Celum, Kim G. Wong, Dana N. Raugi, Stefanie Sorensen, Julia N. Stoddard, Hong Zhao, Wenjie Deng, Erin Kahle, Dana Panteleeff, Jared M. Baeten, Francine E. McCutchan, Jan Albert, Thomas Leitner, Anna Wald, Lawrence Corey, Jairam R. Lingappa
Primary Institution: University of Washington School of Medicine
Hypothesis
Can HIV-1 sequencing establish transmission linkages between infected partners and their seroconverting partners in a clinical trial?
Conclusion
Over one-fourth of HIV-1 transmissions in the study were unlinked to the enrolled partner, highlighting the importance of genetic analysis in understanding transmission dynamics.
Supporting Evidence
- 71.5% of transmissions were linked to the enrolled partner.
- Male seroconverters had a higher frequency of unlinked transmissions than female seroconverters.
- Baseline viral load was significantly higher among linked transmitters.
Takeaway
This study looked at couples where one partner has HIV and found that sometimes the virus comes from someone else, not the partner they thought. This shows how important it is to check where the virus really comes from.
Methodology
The study involved sequencing HIV-1 from blood plasma of 151 transmission pairs and analyzing the genetic linkage using phylogenetic techniques and Bayesian algorithms.
Potential Biases
Potential biases may arise from the self-reported sexual behaviors of participants, which could affect linkage determinations.
Limitations
The study's ability to determine linkage was limited by the availability of local control sequences and the reliance on existing epidemiological data for Bayesian analysis.
Participant Demographics
Participants included serodiscordant heterosexual couples, with 68% of HIV-1 infected partners being female.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
Want to read the original?
Access the complete publication on the publisher's website