Miami, Florida has a large population of Hispanic and black men who have sex with men (MSM), a population more likely to become HIV infected than white MSM. We present here HIV behavioral trends in this population that reflect the effects of public health prevention in Miami over a 10-year period. Using National HIV Behavioral Surveillance (NHBS) data of MSM in Miami-Dade County, Florida, in 2004-05, 2008, 2011 and 2014, chi-square trend analyses were used to assess the epidemiologic trends related to HIV infection rates, HIV testing rates, undiagnosed HIV infection, use antiretroviral therapy (ART) and access to HIV care. Of 258, 527, 511, and 536 MSM, HIV rates have remained steady between 22.5% (95% CI 17.4-27.6) in 2004-05 to a high of 25.9% (95% CI 22.2-29.6) in MSM4 in 2014, with no significant trend. There was an increase in HIV testing in the past six months between 2004 (48.4%;95% CI 41.8-55.0) and 2014 (55.8;95% CI 51.3-60.3), p \u3c .001; and a decrease in unrecognized HIV infection from 48.3% (95% CI 35.4- 61.2) in 2004 to 31.4% (95% CI 23.7-39.1) in 2014, p = .004, over the same period. Being currently on ART and knowledge of pre-exposure prophylaxis (PrEP) also increased significantly during this 10-year period. HIV surveillance is providing valuable information, notably, as HIV testing rates have gone up unrecognized infections have decreased. Continued use of the NHBS system should provide insights into the epidemic and assist in reaching public health goals for the control of HIV infections
