Original title: HIV infection and unawareness among men who have sex with men in Puerto Rico: data from The National HIV behavioral surveillance system 2011-2014.

BACKGROUND: Unawareness of HIV infection is a public health challenge that needs to be addressed, particularly in the case of men who have sex with men (MSM), since recent data are reporting increasing rates of HIV in this population in Puerto Rico. OBJECTIVES: We examined differences in the prevalence of HIV infection and unawareness among MSM in 2011 and 2014 using data from the National HIV Behavioral Surveillance System, 2011 and 2014. METHODS: Bivariate analyses was used to compare demographical and behavioral characteristics in both cycles (2011 and 2014). Prevalence ratio (PR) was assessed with Poisson regression models to determine changes in HIV prevalence and unawareness across cycles, using the 2011 NHBS-MSM cycle as reference group. RESULTS: A stable rate in HIV prevalence was observed in 2011 and 2014. There was a higher prevalence in 2014 than in 2011 in multiple behavioral characteristics such as age at sexual initiation, the number of sexual partners in the 12 months prior to being interviewed, HIV testing in the year prior to being interview, and the disclosure of sexual orientation to a healthcare provider. A significant decrease in HIV unawareness was reported (76.67%, 2011; 46.51%, 2014). Age-adjusted regression models showed a marginal reduction of 55% in HIV unawareness for men who disclosed their sexual orientation to their healthcare providers. CONCLUSION: Behavioral surveillance systems in groups such as MSM in on the island will aid to monitor prospectively the effectiveness of HIV testing outreach and engagement, as well as capacity capacity-building strategies targeted towards health care providers, aimed to increase HIV testing and awareness among this group.

Mortality Disparities among HIV+ Men and Women in Puerto Rico: Data from the HIV/AIDS Surveillance System 2003-2014.

OBJECTIVE: Describe the trend of the indirect standardized death rate of HIV for different modes of HIV transmission from 2003 to 2014 in Puerto Rico. Estimate the magnitude of the association between mode of HIV transmission and mortality at different time periods in Puerto Rico. METHODS: ISDRs by sex and mode of transmission were computed using data from the PR National HIV/AIDS Surveillance System (2003-2014). Poisson models were used to assess the annual percent change of the ISDRs and RRs by sex. RESULTS: Injection drug users (IDUs) showed the highest decrease in ISDR (-10.56, for men; -9.32 for women). Compared to men who have sex with men (MSM), IDU men also had the highest RR, representing an increase of 93% (2009-2011) (RRIDU vs MSM: 1.93, 95% CI: 1.66-2.23). Compared to women who were IDUs, heterosexual (HET) women had less risk of dying (48% for the period of 2006 to 2008). CONCLUSION: Mortality has been decreasing in each mode of transmission for both sexes. In addition, though IDUs present the highest decrease of ISDR, it is still the group whose members have the highest risk of dying, both men and women. To better describe health disparities as related to HIV/AIDS mortality, future analyses should be performed using specific causes of death and the evaluation of other relevant clinical and sociodemographic factors. Such data might increase our understanding of mortality in people with HIV/AIDS on the island, as well as help in future efforts to develop intervention strategies for the aforementioned risk groups.

New Diagnoses among HIV+ Men and Women in Puerto Rico: Data from the HIV Surveillance System 2003-2014.

OBJECTIVE: Describe the age-standardized rates of new HIV diagnoses and compare sex and time disparities using data from the HIV/AIDS Surveillance System in Puerto Rico (PR). METHODS: The study comprises data of new HIV diagnoses of persons 13 years of age and older in PR reported from 2003-2014. Other variables included were age, sex, and health regions. We computed male to female ratio of new HIV diagnoses and assessed the trends in new HIV diagnoses using the annual percent change (APC) of the age-standardized rates (ASRs). The relative risk (RR) was estimated with 95% confidence intervals using Poisson regression models to assess the risk of new HIV diagnoses. RESULTS: The highest HIV diagnosis rates were observed in the metropolitan area. These rates decreased overall for both sexes for the periods 2007 onward. The risk of getting a new HIV diagnosis was significantly higher among males, ranging from an increased risk of more than 50% to almost 5-fold (p<0.05). Overall, a trend was observed in the 2011-2014 period were the risk increases as the age decreases. For the 13-24 age group, we observed a significant increased risk in new HIV diagnosis of 53% in the 2011-2014 period, when compared to 2003-2006 (p<0.05). CONCLUSION: Our findings suggest a shift in the risk of getting a HIV diagnosis from older to younger males. A possible explanation could be that HIV spread among young men that have sex with men might be increasing. Targeted prevention strategies should be implemented in this age group.