Human Immunodeficiency Virus transmission by HIV risk group and along the HIV care continuum

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Xiao Zang ◽  
Cassandra Mah ◽  
Amanda My Linh Quan ◽  
Jeong Eun Min ◽  
Wendy S Armstrong ◽  
...  
2019 ◽  
Vol 70 (6) ◽  
pp. 1131-1138 ◽  
Author(s):  
Tonia Poteat ◽  
David B Hanna ◽  
Peter F Rebeiro ◽  
Marina Klein ◽  
Michael J Silverberg ◽  
...  

Abstract Background Prior studies suggest that transgender women (TW) with human immunodeficiency virus (HIV) are less likely to be virally suppressed than cisgender women (CW) and cisgender men (CM). However, prior data are limited by small sample sizes and cross-sectional designs. We sought to characterize the HIV care continuum comparing TW to CW and CM in the United States and Canada. Methods We analyzed annual HIV care continuum outcomes by gender status from January 2001 through December 2015 among adults (aged ≥18 years) in 15 clinical cohorts. Outcomes were retention in care and viral suppression. Results The study population included TW (n = 396), CW (n = 14 094), and CM (n = 101 667). TW had lower proportions retained in care than CW and CM (P < .01). Estimates of retention in care were consistently lower in TW, with little change over time within each group. TW and CW had similar proportions virally suppressed over time (TW, 36% in 2001 and 80% in 2015; CW, 35% in 2001 and 83% in 2015) and were lower than CM (41% in 2001 and 87% in 2015). These differences did not reach statistical significance after adjusting for age, race, HIV risk group, and cohort. Conclusions TW experience challenges with retention in HIV care. However, TW who are engaged in care achieve viral suppression that is comparable to that of CW and CM of similar age, race, and HIV risk group. Further research is needed to understand care engagement disparities.


2015 ◽  
Vol 175 (4) ◽  
pp. 588 ◽  
Author(s):  
Jacek Skarbinski ◽  
Eli Rosenberg ◽  
Gabriela Paz-Bailey ◽  
H. Irene Hall ◽  
Charles E. Rose ◽  
...  

Author(s):  
Adiba Hassan ◽  
Victor De Gruttola ◽  
Yunyin W Hu ◽  
Zhijuan Sheng ◽  
Kathleen Poortinga ◽  
...  

Abstract Background Public health action combating human immunodeficiency virus (HIV) includes facilitating navigation through the HIV continuum of care: timely diagnosis followed by linkage to care and initiation of antiretroviral therapy to suppress viral replication. Molecular epidemiology can identify rapidly growing HIV genetic transmission clusters. How progression through the care continuum relates to transmission clusters has not been previously characterized. Methods We performed a retrospective study on HIV surveillance data from 5226 adult cases in Los Angeles County diagnosed from 2010 through 2014. Genetic transmission clusters were constructed using HIV-TRACE. Cox proportional hazard models were used to estimate the impact of transmission cluster growth on the time intervals between care continuum events. Gamma frailty models incorporated the effect of heterogeneity associated with genetic transmission clusters. Results In contrast to our expectations, there were no differences in time to the care continuum events among individuals in clusters with different growth dynamics. However, upon achieving viral suppression, individuals in high growth clusters were slower to experience viral rebound (hazard ratio 0.83, P = .011) compared with individuals in low growth clusters. Heterogeneity associated with cluster membership in the timing to each event in the care continuum was highly significant (P < .001), with and without adjustment for transmission risk and demographics. Conclusions Individuals within the same transmission cluster have more similar trajectories through the HIV care continuum than those across transmission clusters. These findings suggest molecular epidemiology can assist public health officials in identifying clusters of individuals who may benefit from assistance in navigating the HIV care continuum.


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