(HealthDay)—From 2008 to 2015, there was a decrease in modeled HIV incidence in all transmission risk groups except men who have sex with men (MSM), according to research published online March 20 in the Annals of Internal Medicine.
Sonia Singh, Ph.D., from the U.S. Centers for Disease Control and Prevention in Atlanta, and colleagues estimated HIV incidence and prevalence and the percentage of undiagnosed HIV infections overall and among MSM in a cross-sectional analysis.
The researchers identified a 14.8 percent decrease in modeled HIV incidence overall, from 45,200 infections in 2008 to 38,500 in 2015; the decrease was seen in all transmission risk groups except MSM. There was a 3.1 percent increase in the incidence of HIV per year among Hispanic/Latino MSM, a 2.7 percent decrease per year among white MSM, and no change among black MSM. The incidence decreased by 3.0 and 4.7 percent per year among MSM aged 13 to 24 years and 35 to 44 years, respectively. Per year, there was a 5.7 percent increase in the incidence of HIV among MSM aged 25 to 34 years, from 6,900 infections in 2008 to 10,000 in 2015. Black, Hispanic/Latino, and younger MSM had a higher percentage of undiagnosed HIV infections.
"Expansion of HIV screening to reduce undiagnosed infections and increased access to care and treatment to achieve viral suppression are critical to reduce HIV transmission," the authors write.
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