Seroprevalence and risk factors associated with hepatitis C: a cross-sectional study of persons who inject drugs in Puerto Rico, 2018.

Background: People Who Inject Drugs (PWID) are at a higher risk of acquiring bloodborne infections. We aimed to estimate the seroprevalence of the Hepatitis C Virus (HCV) in PWID and identify correlates and risk factors using data from the Puerto Rico National HIV Behavioral Surveillance System, PWID cycle 5, conducted in 2018.

Methods: A total of 502 San Juan Metropolitan Statistical Area participants were recruited through the Respondent Driven Sampling method.

Provider-Initiated HIV Testing in Puerto Rico from Data of the National HIV Behavioral Surveillance-Heterosexual Cycle (NHBS-HET) 2016: National Cross-sectional Survey.

Background: According to the Centers for Disease Control and Prevention and World Health Organization guidelines, all individuals aged 13-64 years should get screened for HIV infection as part of their routine medical examinations. Individuals at high risk should get tested annually.

Objective: This study aimed to identify the sociodemographic, health care, and sexual behavioral characteristics of provider-initiated HIV testing using data from the Puerto Rico National HIV Behavioral Surveillance 2016 cycle, directed toward heterosexual individuals at increased risk of HIV infection.

Social Media and Mobile-App use for Sexual Encounters among Men Who Have Sex With Men in Puerto Rico.

Objective: To describe the use and frequency of use of mobile apps (internetand/ or smartphone-based geospatial networking apps) among men who have sex with men (MSM) and how these platforms are used to engage with sexual partners in PR.

Methods: A local module including questions regarding mobile apps and sexual engagement and derived from the 2017 Puerto Rico National HIV Behavioral Surveillance System, fifth MSM cycle, was used for this analysis. A subsample of 127 eligible participants was recruited through venue-based sampling and assented to participate.

Risk Factors Associated with Dengue Transmission and Spatial Distribution of High Seroprevalence in Schoolchildren from the Urban Area of Medellin, Colombia.

Dengue fever is an increasing health problem in tropical and subtropical regions. During 2010 in Medellin, the younger population presented a particularly high dengue incidence rate. This study estimated dengue virus (DENV) transmission in schoolchildren (aged 5-19 years) in Medellin from 2010 to 2012.

[Serum activity of CK and CK-MB in patients with dengue virus infection].

Objective: To determine the serum activity of CK and CK-MB in patients with dengue infection.

Methods: A cross section study was conducted in the State of Antioquia, Colombia. The study population consisted in 54 patients with diagnosis of dengue infection and 10 healthy controls.