Incidence and prevalence of chlamydia, herpes, and viral hepatitis in a homeless adolescent population

Burden, Belonging, and Homelessness: Disclosure and Social Network Differences among LGBTQ Youth Recruited from a Suicide Crisis Service Provider

Among LGBTQ youth, suicidality and homelessness occur at heightened rates. Using the Interpersonal Theory of Suicide (ITS), this study seeks to explore the associations of having a parent, family member, friend, or romantic partner in one's social network and not being "out" to specific network members (lack of disclosure) with ITS constructs (perceived burdensomeness and thwarted belonging), considering homelessness history. Data include 462 youth aged 12-24 who contacted an LGBTQ youth-focused suicide crisis provider from 2015 to 2017. Disclosure status and network composition differed by homelessness experience. Homeless youth were more likely to disclose to their parents and less likely to disclose to other family members. Youth who had not disclosed to their parents reported higher perceived burdensomeness and thwarted belonging whereas having more family members and peers in one's network was associated with lower scores on ITS constructs. Implications for prevention approaches with youth who may be at increased risk for suicide are discussed.

Perceived barriers and facilitators to accessing and utilising sexual and reproductive healthcare for people who experience homelessness: a systematic review

INTRODUCTION

People who experience homelessness face disproportionately poor reproductive health and adverse pregnancy outcomes, including but not limited to unintended pregnancy, abortion, low birth weight and preterm birth, as well as a higher risk of sexually transmitted infections (STIs). Precarious living conditions are known to contribute to poor uptake and engagement with sexual and reproductive healthcare (SRH) for this population.

AIM

To identify and understand the perceived barriers and facilitators for accessing and utilising SRH for people who experience homelessness from their perspective, and the perspective of support staff/volunteers and healthcare professionals.

METHODS

Electronic databases and online sources were searched. Two reviewers independently carried out the screening, data extraction, critical appraisal, data synthesis and thematic analysis of findings.

RESULTS

Following deduplication and screening, 23 papers/reports were considered eligible for the review. Barriers for people experiencing homelessness to accessing and utilising SRH were identified within the themes of complexity, feelings and knowledge (ie, individual-level factors), as well as patient/provider interaction and healthcare system (ie, organisational factors). Facilitators were identified within all of the above themes except for complexity.

CONCLUSIONS

Both population characteristics and attributes of the healthcare system influence access and utilisation of SRH by people experiencing homelessness. Given the complexity of living conditions associated with homelessness, greater efforts to improve access should be placed on healthcare systems and aspects of care delivery. This systematic review highlights current gaps in the literature and provides recommendations for enhancing future research and practice to meet the needs of this vulnerable group more effectively.

Die Entwicklung von Sexualität bei Kindern und Jugendlichen mit sexuellen Gewalterfahrungen

Zusammenfassung. Theoretischer Hintergrund: Zu den Folgen sexueller Gewalt gehören neben somatischen und psychischen Folgen auch Veränderungen in der Entwicklung der Sexualität. Fragestellung: Ziel dieses Reviews ist es, einen systematischen Überblick über den aktuellen Forschungsstand bezüglich der Entwicklung von Sexualität bei Kindern und Jugendlichen nach sexuellen Gewalterfahrungen zu geben. Methode: Eine systematische Literaturrecherche wurde in den Datenbanken PubMed, ERIC, Cochrane und PubPsych durchgeführt. Die Folgen von sexueller Gewalt bezüglich der Sexualität wurden systematisch analysiert. Ergebnisse: Es konnten insgesamt 127 Studien zur Sexualität nach sexueller Gewalt identifiziert werden, die acht Unterkategorien zugeordnet werden konnten: Sexuelles Risikoverhalten, Teenagerschwangerschaft, jugendliche Sexualstraftäter_innen, sexuelle Verhaltensauffälligkeiten, sexuelle Überzeugungen, Prostitution, Geschlechtskrankheiten und körperliche Symptome. Diskussion und Schlussfolgerung: Insgesamt zeigt die Literaturrecherche, dass die Sexualität von Kindern und Jugendlichen mit sexuellen Gewalterfahrungen teilweise nur lückenhaft untersucht wurde.

Vaccine-preventable diseases other than tuberculosis, and homelessness: A scoping review of the published literature, 1980 to 2020

BACKGROUND

Homelessness may result in the breakdown of regular health services, including routine vaccination programmes. A scoping review was conducted to describe vaccine-preventable diseases (VPD) other than tuberculosis in people experiencing homelessness (PEH).

METHODS

We followed the Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for Scoping Reviews (PRISMA-ScR). We searched peer-reviewed literature published in English, French, Spanish or Portuguese reporting the outbreak of VPD or VPD prevalence in both infant and adult homeless populations published between 1980 and 2020, using PubMed/Medline, SciELO, Google Scholar, and Web of Science databases. Relevant information from the studies was charted in Microsoft Excel and results were summarised using a descriptive analytical method.

RESULTS

Eighty-one articles were included. A high prevalence of past hepatitis B virus (HBV) and hepatitis A virus (HAV) infections were observed through serosurveys, mostly in high income countries or high-middle income countries (USA, Canada, France, Iran or Brazil). Ten outbreaks of HAV infection were also reported, with lethality rates ranging from 0 to 4.8%. The studies identified numerous risk factors positively associated with HBV infection, including older age, homosexual or bisexual practice, injected drug use (IDU), and, with HAV infection including IDU, having sexual partner(s) with a history of unspecified hepatitis, insertive anal penetration, or originating from a country with a high prevalence of anti-HAV antibody. Eleven outbreaks of pneumococcal infection affecting PEH were reported in Canada and USA, with lethality rates from 0 to 15.6%. Six diphtheria outbreaks were reported. Vaccination status was rarely documented in these studies.

CONCLUSIONS

The literature suggests that homeless populations generally experience a high VPD burden suggesting the need for a national vaccination programme and planning for delivering vaccines in this population.

Risk behaviour and access to HIV/AIDS prevention services among formerly homeless young adults living in housing programmes

Young adults who experience homelessness have high rates of sexually transmitted infections (STIs) including HIV. Homelessness services programmes that provide housing to young adults have the capacity to reduce STI risk profiles. This study analysed data from 140 formerly homeless adults who moved into a housing programme in Los Angeles County between the ages of 18 and 25 years to investigate risk behaviour and access to HIV/AIDS prevention services. More than three quarters of participants reported sexual activity (vaginal or anal sex) in the prior 3 months, with 63% reporting any unprotected vaginal or anal sex, 29% reporting unprotected sex with a nonserious partner, 40% reporting multiple partners, and 11% reporting exchange sex. About three quarters reported a past-year HIV test. About half of the sample had never heard of pre-exposure prophylaxis (PrEP), 12% had heard of it but didn't know what it was, 25% reported knowing a little bit, and 15% said they knew a lot about PrEP. Slightly more than 4% of the overall sample reported being HIV positive. These findings suggest that housing programmes may be a prime location to implement HIV prevention services.

Opiate Dependence: A Risk Factor for Hepatitis B Virus Exposure in Homeless Adults

The prevalence of hepatitis B virus (HBV) in the homeless population is underestimated despite multiple behavioral risks. Data from a sample of 534 homeless adults from downtown Los Angeles were analyzed to examine the prevalence and predictors of HBV infection in this community. The prevalence of HBV was 7 to 10 times higher than in the US general population rate. Opiate dependence, injection and noninjection use, was an independent predictor of HBV exposure. Testing and counseling occurred at significantly lower rates for HBV than for human immunodeficiency virus. Findings emphasize the need to enhance screening and counseling in homeless communities and other populations with opiate use.

Investigating Health Risk Environments in Housing Programs for Young Adults: Protocol for a Geographically Explicit Ecological Momentary Assessment Study

Background

Young adults who experience homelessness are exposed to environments that contribute to risk behavior. However, few studies have examined how access to housing may affect the health risk behaviors of young adults experiencing homelessness.

Objective

This paper describes the Log My Life study that uses an innovative, mixed-methods approach based on geographically explicit ecological momentary assessment (EMA) through cell phone technology to understand the risk environment of young adults who have either enrolled in housing programs or are currently homeless.

Methods

For the quantitative arm, study participants age 18-27 respond to momentary surveys via a smartphone app that collects geospatial information repeatedly during a 1-week period. Both EMAs (up to 8 per day) and daily diaries are prompted to explore within-day and daily variations in emotional affect, context, and health risk behavior, while also capturing infrequent risk behaviors such as sex in exchange for goods or services. For the qualitative arm, a purposive subsample of participants who indicated engaging in risky behaviors are asked to complete an in-depth qualitative interview using an interactive, personalized geospatial map rendering of EMA responses.

Results

Recruitment began in June of 2017. To date, 170 participants enrolled in the study. Compliance with EMA and daily diary surveys was generally high. In-depth qualitative follow-ups have been conducted with 15 participants. We expect to recruit 50 additional participants and complete analyses by September of 2019.

Conclusions

Mixing the quantitative and qualitative arms in this study will provide a more complete understanding of differences in risk environments between homeless and housed young adults. Furthermore, this approach can improve recall bias and enhance ecological validity.

International Registered Report Identifier (IRRID)

DERR1-10.2196/12112

Street-involved youth engaged in sex work at increased risk of syringe sharing

Syringe sharing places street-involved young people at risk of acquiring HIV and hepatitis C. While markers of economic marginalization, such as homelessness, have been linked with syringe sharing and have led to targeted interventions, the relationship between syringe sharing and other markers of economic vulnerability, such as sex work, are not well documented among young people. This study examines whether those engaged in sex work are at increased risk of syringe borrowing and syringe lending among street-involved youth who use injection drugs in Vancouver, Canada. Between September 2005 and May 2014, data was collected from the At-Risk Youth Study (ARYS), a prospective cohort of street involved youth aged 14-26. Generalized estimating equations with a confounding model building approach was used to examine the relationship between sex work and syringe borrowing and lending. 498 youth reported injecting drugs at some point during the study period and were therefore included in the analysis. In multivariable analysis, youth who engaged in sex work were at an elevated risk of both syringe borrowing (Adjusted Odds Ratio (AOR) = 2.17, 95% Confidence Interval [CI] = 1.40-3.36) and syringe lending (AOR = 1.66, 95% CI = 1.07-2.59). Our study found that youth engaged in street-based sex work were at a significantly higher risk of both syringe borrowing and lending among youth who use injection drugs in Vancouver. Ready access to clean syringes, safer working conditions for sex workers to enable risk reduction measures, and increased access to addiction treatment are identified as promising opportunities for reducing syringe sharing in this setting.

Narrative Review: Sexually Transmitted Diseases and Homeless Youth-What Do We Know About Sexually Transmitted Disease Prevalence and Risk?

BACKGROUND

Homelessness affects an estimated 1.6 million US youth annually. Compared with housed youth, homeless youth are more likely to engage in high-risk behaviors, including inconsistent condom use, multiple sex partners, survival sex, and alcohol/drug use, putting them at increased sexually transmitted disease (STD) risk. However, there is no national estimate of STD prevalence among this population.

METHODS

We identified 10 peer-reviewed articles (9 unique studies) reporting STD prevalence among homeless US youth (2000-2015). Descriptive and qualitative analyses identified STD prevalence ranges and risk factors among youth.

RESULTS

Eight studies reported specific STD prevalence estimates, mainly chlamydia, gonorrhea, and syphilis. Overall STD prevalence among homeless youth ranged from 6% to 32%. STD rates for girls varied from 16.7% to 46%, and from 9% to 13.1% in boys. Most studies were conducted in the Western United States, with no studies from the Southeast or Northeast. Youths who experienced longer periods of homelessness were more likely to engage in high-risk sexual behaviors. Girls had lower rates of condom use and higher rates of STDs; boys were more likely to engage in anal and anonymous sex. Additionally, peer social networks contributed to protective effects on individual sexual risk behavior.

CONCLUSIONS

Sexually transmitted disease prevalence estimates among homeless youth fluctuated greatly by study. Sexually transmitted disease risk behaviors are associated with unmet survival needs, length of homelessness, and influence of social networks. To promote sexual health and reduce STD rates, we need better estimates of STD prevalence, more geographic diversity of studies, and interventions addressing the behavioral associations identified in our review.

Prevalence of HAV Ab, HEV (IgG), HSV2 IgG, and Syphilis Among Sheltered Homeless Adults in Tehran, 2012

Background: This study investigated the prevalence for hepatitis A virus (HAV), hepatitis E virus (HEV), herpes simplex virus type 2 (HSV2) and syphilis among homeless in the city of Tehran.

Methods: In this cross-sectional study, 596 homeless were recruited in Tehran. A researcher-designed questionnaire was used to study demographic data. Using enzyme-linked immunoassay, and rapid plasma reagin (RPR) test, we evaluated the seroprevalence of HAV anti-body, HEV IgG, herpes, HSV2 IgG, and syphilis among sheltered homeless in Tehran. The associations between the participant’s characteristics and infections were evaluated using logistic regression and chi-square.

Results: A total of 569 homeless, 78 women (13.7%) and 491 men (86.3%) were enrolled into the study from June to August 2012. Their age mean was 42 years and meantime of being homeless was 24 months. Seroprevalence of syphilis, HEV IgG, HSV2 IgG and HAV Ab was 0.55%, 24.37%, 16.48%, and 94.34%, respectively. History of drug abuse was reported in 77.70%; 46.01% of them were using a drug during the study and 26.87% of them had history of intravenous drug abuse. Among people who had intravenous drug abuse, 48.25% had history of syringe sharing.

Conclusion: The prevalence of HAV, HEV and HSV2 were higher than the general population while low prevalence of syphilis was seen among homeless peoples who are at high risk of sexually transmitted infection (STD). Our findings highlighted that significant healthcare needs of sheltered homeless people in Tehran are unmet and much more attention needs to be paid for the health of homeless people.

Health problems among street children seeking care in the Center for Social and Preventive Medicine in Egypt

BACKGROUND

In Egypt, around 1 million children are on the streets. Street children's health is an issue that is not well researched. The objective of the current study was to determine the health problems of a targeted group of street children seeking medical care and to generate a hypothesis about the positive/negative role of street children care organizations.

METHODS

A cross-sectional study was done on 2169 street children who sought medical care at El-Basma clinic at the Center for Social and Preventive Medicine in Cairo University Children Hospital from January 2011 to July 2014.

RESULTS

Respiratory illnesses and skin problems were the most prevalent conditions, affecting 485 (22.4%) and 359 (16.6%) of the patients, respectively. Psychological issues and trauma were significantly higher among the adolescent group. Respiratory and gastrointestinal problems were significantly higher among children aged less than 2 years. Genital and cardiac problems were significantly higher among those referred from organizations whereas trauma was significantly higher among those coming directly from the streets. A significant proportion of children at the extremes of the studied age spectrum were coming directly from the streets. Sexually transmitted infections were rare problems.

CONCLUSIONS

Respiratory and skin diseases were the major morbidity problems among street children, especially adolescent males. Organizations afforded opportunities for access to different health care services.

Exposure to hepatitis C virus in homeless men in Central Brazil: a cross-sectional study

Background

Homeless men are highly vulnerable to acquisition of the hepatitis C virus (HCV) compared to the general population. In Brazil, a country of continental dimensions, the extent of HCV infection in this population remains unknown. The objective of this study is to investigate the epidemiological profile of exposure to HCV in homeless men in Central Brazil.

Methods

A Cross-sectional study was conducted in 481 men aged over 18 years attending therapeutic communities specialized in the recovery and reintegration of homeless people. Participants were tested for anti-HCV markers using rapid tests. Poisson regression analysis was used to verify the risk factors associated with exposure to HCV.

Results

The prevalence of HCV exposure was 2.5% (95.0% CI: 1.4 to 4.3%) and was associated with age, absence of family life, injection drug use, number of sexual partners, and history of sexually transmitted infections (STI). Participants reported multiple risk behaviors, such as alcohol (78.9%), cocaine (37.1%) and/or crack use (53.1%), and inconsistent condom use (82.6%). Injection drug use was reported by 8.7% of participants.

Conclusions

The prevalence of HCV infection among homeless men was relatively high. Several risk behaviors were commonly reported, which shows the high vulnerability of this population. These findings emphasize the need for the development of specific strategies to reduce the risk of HCV among homeless men.

HIV prevalence in children and youth living on the street and subject to commercial sexual exploitation: a systematic review

The aim of this review was to describe HIV prevalence in children and youth living on the street and subject to commercial sexual exploitation, and the studies' characteristics in terms of place, time, population, and sample design. This was a systematic review, not a meta-analysis, based on an article search in 10 electronic databases: Science Direct, MEDLINE, OVID, LILACS, Wiley InterScience, MD Consult, Springer Link, Embase, Web of Science, and Ebsco. A complementary search was also performed in the libraries of schools of public health and webpages of U.N. agencies, besides the reference lists from the selected articles. We selected observational studies focused on children and youth living on the street and subject to commercial sexual exploitation, ranging in age from 10 to 20 years, with the results for HIV prevalence rates. A total of 9,829 references were retrieved, of which 15 met the inclusion criteria and comprise this descriptive summary. Of these 15 articles, 12 were conducted in children and youth living on the street and three in children subject to commercial sexual exploitation. All 15 were cross-sectional studies. HIV prevalence in children and youth living on the street ranged from 0% in Dallas, USA and Cochabamba, Bolivia to 37.4% in St. Petersburg, Russia. In children and youth living subject to commercial sexual exploitation, prevalence ranged from 2% in Toronto, Canada to 20% in Kolkata, India. In conclusion, HIV infection is present in children and youth living on the street and subject to commercial sexual exploitation. Measures are needed for prevention, diagnosis, and treatment as a public health priority and an ethical responsibility on the part of governments and society.

Housing and sexual health among street-involved youth

Street-involved youth (SIY) carry a disproportionate burden of sexually transmitted diseases (STD). Studies among adults suggest that improving housing stability may be an effective primary prevention strategy for improving sexual health. Housing options available to SIY offer varying degrees of stability and adult supervision. This study investigated whether housing options offering more stability and adult supervision are associated with fewer STD and related risk behaviors among SIY. A cross-sectional study was performed using public health survey and laboratory data collected from Toronto SIY in 2010. Three exposure categories were defined a priori based on housing situation: (1) stable and supervised housing, (2) stable and unsupervised housing, and (3) unstable and unsupervised housing. Multivariate logistic regression was used to test the association between housing category and current or recent STD. Secondary analyses were performed using the following secondary outcomes: blood-borne infection, recent binge-drinking, and recent high-risk sexual behavior. The final analysis included 184 SIY. Of these, 28.8 % had a current or recent STD. Housing situation was stable and supervised for 12.5 %, stable and unsupervised for 46.2 %, and unstable and unsupervised for 41.3 %. Compared to stable and supervised housing, there was no significant association between current or recent STD among stable and unsupervised housing or unstable and unsupervised housing. There was no significant association between housing category and risk of blood-borne infection, binge-drinking, or high-risk sexual behavior. Although we did not demonstrate a significant association between stable and supervised housing and lower STD risk, our incorporation of both housing stability and adult supervision into a priori defined exposure groups may inform future studies of housing-related prevention strategies among SIY. Multi-modal interventions beyond housing alone may also be required to prevent sexual morbidity among these vulnerable youth.

Six-year mortality in a street-recruited cohort of homeless youth in San Francisco, California

Objectives. The mortality rate of a street-recruited homeless youth cohort in the United States has not yet been reported. We examined the six-year mortality rate for a cohort of street youth recruited from San Francisco street venues in 2004.

Methods. Using data collected from a longitudinal, venue-based sample of street youth 15–24 years of age, we calculated age, race, and gender-adjusted mortality rates.

Results. Of a sample of 218 participants, 11 died from enrollment in 2004 to December 31, 2010. The majority of deaths were due to suicide and/or substance abuse. The death rate was 9.6 deaths per hundred thousand person-years. The age, race and gender-adjusted standardized mortality ratio was 10.6 (95% CI [5.3–18.9]). Gender specific SMRs were 16.1 (95% CI [3.3–47.1]) for females and 9.4 (95% CI [4.0–18.4]) for males.

Conclusions. Street-recruited homeless youth in San Francisco experience a mortality rate in excess of ten times that of the state’s general youth population. Services and programs, particularly housing, mental health and substance abuse interventions, are urgently needed to prevent premature mortality in this vulnerable population.

Substance use patterns and unprotected sex among street-involved youth in a Canadian setting: a prospective cohort study

Background

Rates of sexually transmitted infections (STI) and unplanned pregnancy are high among youth. While the intersection between drug and alcohol use and unprotected sex is well recognized, few studies have examined the relationship between substance use patterns and unprotected sex among high risk-populations such as street-involved youth.

Methods

Data were derived from the At-Risk Youth Study (ARYS), a prospective cohort of street-involved youth from Vancouver, Canada. Generalized estimating equations (GEE) were used to examine substance use patterns that were independently associated with unprotected sex, defined as (vaginal or anal) sexual intercourse without consistent condom use.

Results

Between September 2005 and May 2013, 1,026 youth were recruited into the ARYS cohort and 75 % (n = 766) reported engaging in recent unprotected sex at some point during the study period. In a multivariable analysis, female gender (adjusted odds ratio [AOR] = 1.46, 95 % confidence interval [CI]: 1.18-1.81), Caucasian ancestry (AOR = 1.38, 95 % CI: 1.13-1.68), being in a stable relationship (AOR = 4.64, 95 % CI: 3.82-5.65), having multiple sex partners (AOR = 2.60, 95 % CI: 2.18-3.10) and the following substance use patterns were all independently associated with recent unprotected sex: injection or non-injection crystal methamphetamine use (AOR = 1.21, 95 % CI: 1.03-1.43), injection or non-injection cocaine use (AOR = 1.20, 95 % CI: 1.02-1.41), marijuana use (AOR = 1.23, 95 % CI: 1.02-1.49), ecstasy use (AOR = 1.23, 95 % CI: 1.01-1.48) and alcohol use (AOR = 1.31, 95 % CI: 1.11-1.55) (all p < 0.05).

Conclusions

Unprotected sex was prevalent among street-involved youth in this setting, and independently associated with female gender and a wide range of substance use patterns. Evidence-based and gender-informed sexual health interventions are needed in addition to increased access to youth-centered addiction treatment services. STI testing and linkages to healthcare professionals remain important priorities for street-involved youth, and should be integrated across all health and social services.

Prevalence of sexually transmitted infections including HIV in street-connected adolescents in western Kenya

PURPOSE

The objectives of this study were to characterise the sexual health of street-connected adolescents in Eldoret, Kenya, analyse gender disparity of risks, estimate the prevalence of sexually transmitted infections (STIs), and identify factors associated with STIs.

METHODS

A cross-sectional study of street-connected adolescents ages 12-21 years was conducted in Eldoret, Kenya. Participants were interviewed and screened for Chlamydia trachomatis, Neisseria gonorrhoeae, Trichomonas vaginalis, herpes simplex virus-2, syphilis and HIV. Descriptive statistics and logistic regression were used to identify factors associated with having any STI.

RESULTS

Of the 200 participants, 81 (41%) were female. 70.4% of females and 60.5% of males reported sexual activity. Of those that participated in at least one STI test, 28% (55/194) had ≥1 positive test, including 56% of females; 14% (28/194) had >1 positive test. Twelve females and zero males (6% overall, 14.8% of females) were HIV positive. Among females, those with HIV infection more frequently reported transactional sex (66.7% vs. 26.1%, p=0.01), drug use (91.7% vs. 56.5%, p=0.02), and reported a prior STI (50.0% vs. 14.7%, p<0.01). Having an adult caregiver was less likely among those with HIV infection (33.3% vs. 71.0%, p=0.04). Transactional sex (AOR 3.02, 95% CI (1.05 to 8.73)), a previous STI (AOR 3.46 95% CI (1.05 to 11.46)) and ≥2 sexual partners (AOR 5.62 95% (1.67 to 18.87)) were associated with having any STI.

CONCLUSIONS

Street-connected adolescents in Eldoret, Kenya are engaged in high-risk sexual behaviours and females in particular have a substantial burden of STIs and HIV. There is a need for STI interventions targeted to street-connected youth.

Vulnerability of homeless people in Tehran, Iran, to HIV, tuberculosis and viral hepatitis

BACKGROUND

Homeless people are at risk of contracting communicable infectious diseases, as they indulge in risky behaviours and lifestyle. This study was conducted to determine the prevalence of the aforementioned infections and related risk behaviours among homeless people in Tehran.

METHODS

In this study a convenience sample of 593 homeless individuals was studied. The ELISA method was used for the detection of HIV, HCV and HBV. Clinical symptoms, sputum cultures, acid fast bacilli smears, and chest X-rays were used to identify active pulmonary tuberculosis, and the Interferon Gamma Release Assay (IGRA) test was used to identify latent tuberculosis.

RESULTS

The prevalence of HIV, HBV, HCV and latent tuberculosis was 3.4%, 2.6%, 23.3% and 46.7%, respectively. Active pulmonary tuberculosis was found in 7 persons (1.2%). Injection drug use was an independent risk factor for HIV, HCV and HBV infections. Older people had a higher proportion of Mycobacterium tuberculosis infection (OR: 2.6, 95%CI: 1.9, 3.7) and HCV positivity (OR: 1.7, 95% CI: 1.1, 2.5).

CONCLUSION

Our findings highlighted that much more attention needs to be paid to the health of homeless people.

It takes 2: partner attributes associated with sexually transmitted infections among adolescents

OBJECTIVES

The aims of this study were to identify partner attributes associated with sexually transmitted infections (STIs) among adolescents and to summarize implications for research and prevention.

DESIGN

The design of this study was systematic review.

METHODS

We identified peer-reviewed studies published in 1990 through 2010 that assessed 1 or more partner attributes in relation to a biologically confirmed STI among adolescents (15-24 years) by searching MEDLINE and included articles. Studies that included adolescents but more than 50% of the sample or with mean or median age of 25 years or greater were excluded.

RESULTS

Sixty-four studies met the eligibility criteria; 61% were conducted in high-income countries; 80% were cross sectional; and 91% enrolled females and 42% enrolled males. There was no standard "partner" definition. Partner attributes assessed most frequently included the following: age, race/ethnicity, multiple sex partners, and STI symptoms. Older partners were associated with prevalent STIs but largely unrelated to incidence. Black race was associated with STIs but not uniformly. Partners with multiple partners and STI symptoms seem to be associated with STIs predominantly among females. Although significant associations were reported, weaker evidence exists for the following: other partner sociodemographics, sexual and other behaviors (sexual concurrency, intimate partner violence, substance use, travel), and STI history. There were no apparent differences by STI.

CONCLUSIONS

Partner attributes are independently associated with STIs among male and female adolescents worldwide. These findings reinforce the importance of assessing partner attributes when determining STI risk. Prevention efforts should continue to promote and address barriers to condom use. Increased efforts are needed to screen and treat STIs and reduce risky behavior among men. A standard partner definition would facilitate the interpretation of findings in future studies.

Understanding correlates of hepatitis C virus infection among homeless recently paroled men

This cross-sectional study assessed predictors of Hepatitis C virus (HCV) positivity with baseline data collected on recently released male parolees (N = 157) participating in a randomized trial focused on reduction of drug use, recidivism, and risk for hepatitis and HIV infections. In this sample, the prevalence of HCV was 25%. The logistic regression analysis revealed that being an injection drug user was significantly related to HCV infection. However, contrary to most of the current literature, being Black had significantly lower odds of contracting HCV than their White counterparts. Moreover, having lived on the streets, not being part of a close family in childhood, and being older were also associated with HCV infection. These findings highlight the need for skilled assessments that target the vulnerabilities of homeless adults, especially those who have been incarcerated. Understanding drug use patterns, childhood networks, and family relationships, may assist in the design of interventions to reduce risky drug use and address behaviors derived from disadvantaged childhood.

Impact of nursing intervention on improving HIV, hepatitis knowledge and mental health among homeless young adults

In a prospective two-group pilot study of a convenient sample of 156 young adults, we assessed improvement in HIV cognitive and transmission knowledge, hepatitis knowledge, and mental health at six-month follow-up. Multiple linear regression analysis revealed higher six-month scores in total HIV/AIDS knowledge, HIV/AIDS cognitive knowledge, HIV transmission knowledge and HBV and HCV knowledge at 6 months in the Hepatitis Health Promotion (HHP) group compared to the Art Messaging (AM) group. Moreover, homeless young participants who reported having significant others in their lives, and excellent or very good health did better than their counterparts. Youth who were attempting to get their lives together had higher scores for all types of knowledge except HBV. Hallucinogen users had significantly worse scores on all knowledge measures than non-users. Lastly, the HHP group revealed an improvement in psychological well-being compared to the AM group.

Reaching youth with out-of-facility HIV and reproductive health services: a systematic review

PURPOSE

Many young people, particularly those who are marginalized and most at risk for HIV and reproductive health-related problems, cannot or will not seek traditional facility-based health services. Policies and programs are being implemented to provide them with these health services in the community. We sought to review the effectiveness of such approaches in increasing HIV and reproductive health service use.

METHODS

A systematic literature review was undertaken to identify policies promoting or programs delivering HIV or reproductive health services in the community. We reviewed studies that evaluated uptake of services or commodities. Data from studies meeting inclusion criteria were qualitatively analyzed.

RESULTS

Twenty studies met inclusion criteria, including 10 containing comparative data (e.g., before and after study or control study design). The studies generally demonstrated positive impact, although results varied across settings and approaches. The most successful approaches included mail-based chlamydia screening in the Netherlands, condom distribution via street outreach in Louisiana, home-based HIV counseling and testing in Malawi, and promotion of over-the-counter access to emergency contraception in various countries.

CONCLUSION

Overall, this review suggests that out-of-facility approaches can be important avenues to reach youth. Continued evaluation is necessary to better understand specific approaches that can successfully deliver health services.

Case-crossover analysis of condom use and herpes simplex virus type 2 acquisition

BACKGROUND

Although growing evidence suggests that condoms offer moderate protection against herpes simplex virus type 2 (HSV-2), inability to control for unknown or unmeasured confounders associated with sexual activity may reduce the accuracy of the estimates. The case-crossover design offers increased control of individual-level confounders, and was thus used with the aim of producing a more accurate estimate of the effect of condom use on HSV-2 acquisition.

METHODS

Data were pooled from 6 prospective studies that measured HSV-2 status at enrollment and over follow-up, and included periodic self-reported condom use and sexual activity. Sexual activity contemporaneous with acquisition was assigned to a case period; earlier sexual activity was assigned to a control period. Conditional logistic regression was used to assess differences in behavior during the case and control periods.

RESULTS

One hundred ninety-one eligible participants acquired HSV-2 during follow-up. This approach detected a 3.6% increase in the odds of HSV-2 acquisition with each unprotected act (odds ratio = 1.036; 95% confidence interval: 1.021-1.052), but no increase in the odds of acquisition associated with protected acts (odds ratio = 1.008; 95% confidence interval: 0.987-1.030).

CONCLUSIONS

This analysis suggests that condoms offer significant protection against HSV-2 transmission.

National estimates of seroincidence and seroprevalence for herpes simplex virus type 1 and type 2 among US military adults aged 18 to 29 years

BACKGROUND

While population-based seroprevalence studies of herpes simplex virus type 1 (HSV-1) and type 2 (HSV-2) are widespread, seroincidence studies are largely limited to select or high-risk populations. The US military offers a potential population to derive national seroincidence rate estimates for young adults (ages 18-29).

METHODS

We used banked, longitudinal serum specimens collected in a cohort of 1094 military personnel aged 18 to 30 years who served between 1989 and 2005 to estimate national HSV-1 and HSV-2 seroincidence and seroprevalence for the young, adult military population, weighted according to the US Census. Serum was tested with indirect ELISA (enzyme-linked immunosorbent assay).

RESULTS

Estimated national seroincidence rates for the US young, adult military population were 9.1 per 100 person-years (95% confidence interval: 4.6-13.5) for HSV-1 and 6.2 (95% confidence interval: 3.1-9.3) for HSV-2. Female sex and black race were associated with significantly higher HSV-2 seroconversion rates. Our estimated HSV1/2 seroprevalences were comparable to US national data provided by National Health and Nutrition Examination Surveys' serosurveys except for non-Hispanic blacks and Hispanics.

CONCLUSION

Although these US 2000 Census-weighted estimates of HSV-1 and HSV-2 seroincidence apply only to young, military adults, they nonetheless supply, to our knowledge, the only national figures that might be used to predict US national HSV1/2 seroincidence in young adults. Thus, we believe that our findings in this military population can be used to inform the planning of HSV-1 and 2 prevention measures in the general, young-adult US population.

The Impact of Homelessness on Recent Sex Trade among Pregnant Women in Drug Treatment

This study is a secondary data analysis aimed to examine the influence of recent homelessness on recent sex trade among pregnant women in drug treatment after controlling for psychiatric comorbidity, age, education, and race. Eighty-one pregnant women from a drug treatment program in Baltimore, Maryland attended an in-person interview and completed the Structured Clinical Interview for Diagnostic and Statistical Manual for Mental Disorders-IV for Axis I disorders, the HIV Risk Behavior Interview, and demographic questionnaires, which assessed psychiatric symptoms, recent homelessness, and sexual risk behavior respectively. Women who experienced recent homelessness had a 4.74 greater odds of having recently traded sex than women who had not been recently homeless, suggesting that homelessness uniquely influences sex trade beyond psychiatric status, which was also a significant correlate of recent sex trade. Addressing both homelessness and psychiatric problems may effectively reduce sex trade and risk for infectious diseases, which could adversely impact maternal and child health outcomes.

Incidence of sexually transmitted infections among hazardously drinking women after incarceration

INTRODUCTION AND BACKGROUND

At the time of incarceration, women have a high prevalence of sexually transmitted infections (STI). In the months after community release, women remain at high risk for new infections. This study assessed the rates and predictors of incident chlamydia, gonorrhea, and trichomoniasis in a sample of hazardously drinking women after incarceration.

METHODS

Self-reported behavioral data were collected from 245 incarcerated women. Vaginal swabs were collected at baseline, and 3- and 6-month time points and tested for chlamydia, gonorrhea, and trichomoniasis. Treatment was provided for all positive tests.

RESULTS

Participants' mean age was 34.1 years of age; 175 (71.4%) were Caucasian, 47 (19.2%) were African American, 17 (6.9%) were Hispanic, and 6 (2.4%) were of other ethnic origins. The STI incidence rate was estimated to be 30.5 (95% confidence interval, 21.3-43.5) new infections per 100 person-years. Number of male sex partners reported during follow-up was a significant (z = 2.16; p = .03) predictor of STI; each additional male sex partner increased the estimated hazard of STI by 1.26.

CONCLUSION

Incarcerated women who are hazardous drinkers are at high risk for STI in the months after their return to the community. In addition to testing and treatment during incarceration, post-release rescreening, education, partner treatment, and follow-up are recommended.

Multicity HIV seroprevalence in street youth, Ukraine

We conducted the first systematic, community-based, multicity assessment outside the USA of HIV seroprevalence, risk factors and linkage into clinical services among 929 street youth. After city-wide mapping, we used time-location sampling and randomly selected 74 venues in Odesa, Kyiv and Donetsk, Ukraine. Rapid HIV testing with post-test counselling was offered to all eligible youths aged 15-24 years. Overall, 18.4% (95% confidence interval 16.2-20.2) were HIV positive and 85% had previously unknown status. Rates were identical by sex. Subgroups with highest rates included orphans (26%), youths with histories of exchanging sex (35%), sexually transmitted infections (STIs) (37%), injection drug use (IDU) (42%) and needle sharing (49%). Independent predictors, similar across age groups and city, included being orphaned, time on the street, history of anal sex, STIs, exchanging sex, any drug use, IDU and needle sharing. Two-thirds (68%) of HIV-positive youths were linked to services. This high-risk population has many immediate needs.

Public injecting and HIV risk behaviour among street-involved youth

BACKGROUND

Although street-involved youth who inject illicit drugs are known to be at an increased risk of HIV and other adverse health outcomes, little is known about public injecting among this population and how injecting in public environments may impact HIV risk behaviour.

METHODS

We used data derived from a study of 560 street-involved youth in Vancouver, Canada to examine the factors associated with injecting in public environments among youth who reported injecting drugs in the past 6 months.

RESULTS

At baseline, 162 (28.9%) reported injecting drugs in the past 6 months. Among injectors, the 124 (76.5%) participants who reported injecting in public were more likely to be homeless (odds ratio [OR]=6.39, p<0.001), engage in unprotected intercourse (OR=3.09, p=0.004), deal drugs (OR=2.26, p=0.032), smoke crack cocaine (OR=3.00, p=0.005), inject heroin (OR=3.48, p=0.001), drop used syringes outdoors (OR=8.44, p<0.001), share syringes (OR=4.43, p=0.004), and were less likely to clean injection sites >75% of the time (OR=0.36, p=0.008). The majority (62.1%) reported feeling rushed while injecting in public.

CONCLUSIONS

Youth who inject in public are significantly more likely to engage in sexual and injection-related risk behaviour. Given the known elevated rates of HIV infection and other harms among this population, youth-focused interventions that target both sexual and drug-related risks associated with public drug-using environments are in urgent need of evaluation.

Involving vulnerable populations of youth in HIV prevention clinical research

Adolescents continue to be at high risk for HIV infection, with young men who have sex with men and youth with drug abuse and/or mental health problems at particularly high risk. Multiple factors may interact to confer risk for these youth. Engaging vulnerable youth in HIV prevention research can present unique challenges in the areas of enrollment, retention, and trial adherence. Examples of successful engagement with vulnerable youth offer encouraging evidence for the feasibility of including these youth in clinical trials. Ethical challenges must be taken into consideration before embarking on biomedical HIV prevention studies with vulnerable youth, especially in the global context. Given the many individual and contextual factors that contribute to their high-risk status, it is essential that vulnerable youth populations be included in HIV prevention clinical research studies.

Trends in vaccine-induced immunity to hepatitis B among Canadian street-involved youth

In Canada, universal and publicly funded hepatitis B immunization programs have been available since 1998 in all provinces and territories. This present study estimates the proportion of having vaccine-induced immunity to hepatitis B virus (HBV) infection and its associated determinants among street-involved youth aged at 15-24 years old in Canada using the data collected by the Enhanced Surveillance of Canadian Street Youth. Vaccine-induced immunity was identified by blood test results of anti-HBc negative and anti-HBs positive. Of the 4,035 participants included in this study, the overall proportion of those with vaccine-induced immunity to HBV was 51.7% during the study period compared to over 90% among the general adolescent population. The proportion of street-involved youth immunized with HBV vaccine increased from 34.7% in 1999 to 64.4% in 2005. Immunity was higher among females (aOR = 1.43, 1.17-1.75) and among those with a reported history of sexually transmitted infection (aOR = 1.30, 1.03-1.63). The proportion of youth with the immunity decreased as age increased (aOR = 0.78, 0.76-0.81, per year increase). Despite an overall increase in the proportion of Canadian street-involved youth with vaccine-induced immunity to HBV, the proportion was still significantly lower than that observed in the general adolescent population. This highlights the need to improve the access to basic health care and the immunization programs to HBV for street-involved youth through creative outreach programs and other multi-faceted approaches.

A pooled analysis of the effect of condoms in preventing HSV-2 acquisition

BACKGROUND

The degree of effectiveness of condom use in preventing the transmission of herpes simplex virus 2 (HSV-2) is uncertain. To address this issue, we performed a large pooled analysis.

METHODS

We identified prospective studies with individual-level condom use data and laboratory-defined HSV-2 acquisition. Six studies were identified through a review of publications through 2007: 3 candidate HSV-2 vaccine studies, an HSV-2 drug study, an observational sexually transmitted infection (STI) incidence study, and a behavioral STI intervention study. Study investigators provided us individual-level data to perform a pooled analysis. Effect of condom use was modeled using a continuous percentage of sex acts during which a condom was used and, alternatively, using absolute numbers of unprotected sex acts.

RESULTS

A total of 5384 HSV-2-negative people at baseline contributed 2 040 894 follow-up days; 415 persons acquired laboratory-documented HSV-2 during follow-up. Consistent condom users (used 100% of the time) had a 30% lower risk of HSV-2 acquisition compared with those who never used condoms (hazard ratio [HR], 0.70; 95% confidence interval [CI], 0.40-0.94) (P = .01). Risk for HSV-2 acquisition increased steadily and significantly with each unprotected sex act (HR, 1.16; 95% CI, 1.08-1.25) (P < .001). Condom effectiveness did not vary by gender.

CONCLUSIONS

To our knowledge, this is the largest analysis using prospective data to assess the effect of condom use in preventing HSV-2 acquisition. Although the magnitude of protection was not as large as has been observed with other STIs, we found that condoms offer moderate protection against HSV-2 acquisition in men and women.

Individual and environmental protective factors for risky sexual behavior among homeless youth: an exploration of gender differences

The goal of the current study was to identify potential individual and environmental protective factors for sex risk behavior among homeless youth. We explored gender differences in the prediction of unprotected sex and number of sex partners. Data were collected from 192 sexually active, homeless youth who were 14-21 years old. High rates of sex risk behavior were reported. Significant gender differences were found in STD rates with 19% of females and 2% of males reporting an STD diagnosis during the previous three months. Findings indicated that positive expectations for the future were associated with fewer sex partners for both genders, whereas decision making skills predicted a lower percentage of unprotected sex for males and fewer sex partners for females. For females, univariate analyses indicated that self-esteem and having a natural mentor may reduce the likelihood of unprotected sex, whereas multivariate analysis indicated that being employed or in school may play a protective role with respect to number of sex partners.

The worlds of homeless white and African American youth in San Francisco, California: a cultural epidemiological comparison

Research to date has given little attention to differences in the experience of youth homelessness by ethnicity. This article provides a comparative descriptive analysis of the effect of differences and similarities in paths to homelessness, self-perception, and survival strategies on health behaviors and consequent health outcomes of African American and white homeless youth in San Francisco, USA. We conducted participant observation and ethnographic interviews with 54 youth primarily recruited from street venues. Hypotheses generated from the ethnographic data were validated in between-group analyses using concurrent epidemiological data collected from a sample of 205 youth. Our samples of unstably housed African American and white youth, though sharing common histories of family dysfunction, differed in both the ethnographic accounts and epidemiological analyses in their experiences of family, access to housing, street survival strategies, self-presentation, health behaviors and service utilization. Our sample of white youth generally identified with the term "homeless," engaged in survival activities associated with such a label, and accessed the services intended to address the needs of homeless youth. In contrast, our sample of African American youth generally did not perceive themselves as "homeless," a stigmatized term, and were thus less likely to utilize, or be accessed by, relevant services.

Structural factors associated with an increased risk of HIV and sexually transmitted infection transmission among street-involved youth

Background

The prevalence of HIV and sexually transmitted infections (STIs) among street-involved youth greatly exceed that of the general adolescent population; however, little is known regarding the structural factors that influence disease transmission risk among this population.

Methods

Between September 2005 and October 2006, 529 street-involved youth were enroled in a prospective cohort known as the At Risk Youth Study (ARYS). We examined structural factors associated with number of sex partners using quasi-Poisson regression and consistent condom use using logistic regression.

Results

At baseline, 415 (78.4%) were sexually active, of whom 253 (61.0%) reported multiple sex partners and 288 (69.4%) reported inconsistent condom use in the past six months. In multivariate analysis, self-reported barriers to health services were inversely associated with consistent condom use (adjusted odds ratio [aOR] = 0.52, 95%CI: 0.25 – 1.07). Structural factors that were associated with greater numbers of sex partners included homelessness (adjusted incidence rate ratio [aIRR] = 1.54, 95%CI: 1.11 – 2.14) and having an area restriction that affects access to services (aIRR = 2.32, 95%CI: 1.28 – 4.18). Being searched or detained by the police was significant for males (aIRR = 1.36, 95%CI: 1.02 – 1.81).

Conclusion

Although limited by its cross-sectional design, our study found several structural factors amenable to policy-level interventions independently associated with sexual risk behaviours. These findings imply that the criminalization and displacement of street-involved youth may increase the likelihood that youth will engage in sexual risk behaviours and exacerbate the negative impact of resultant health outcomes. Moreover, our findings indicate that environmental-structural interventions may help to reduce the burden of these diseases among street youth in urban settings.

Homelessness and unstable housing associated with an increased risk of HIV and STI transmission among street-involved youth

The role that environmental factors play in driving HIV and STI transmission risk among street-involved youth has not been well examined. We examined factors associated with number of sex partners using quasi-Poisson regression and consistent condom use using logistic regression among participants enroled in the At Risk Youth Study (ARYS). Among 529 participants, 253 (47.8%) reported multiple partners while only 127 (24.0%) reported consistent condom use in the past 6 months. Homelessness was inversely associated with consistent condom use (adjusted odds ratio [aOR]=0.47, p=0.008), while unstable housing was positively associated with greater numbers of sex partners (adjusted incidence rate ratio [aIRR]=1.44, p=0.010). These findings indicate the need for interventions which modify environmental factors that drive risk among young street-involved populations.

Attitudes of homeless and drug-using youth regarding barriers and facilitators in delivery of quality and culturally sensitive health care

PROBLEM

Major barriers to care included a lack of culturally competent, accessible care despite the proximity of numerous health service agencies serving homeless youth.

METHODS

A qualitative approach using semistructured focus groups was used to assess the perspectives of 54 homeless and drug-using youth, aged 18-24 years, recruited from street- and shelter-based settings.

FINDINGS

Substance use was perceived as an adaptive response to psychological pain and survival on the streets as well as a health risk and barrier to care.

CONCLUSIONS

Facilitators to care and suggestions for improved health delivery and quality of care included utilization of health "mentors" to assist in navigating the medical system, cultural competency enhancements, improved amenities in clinic wait areas, and expanded pharmaceutical services.

Caring for and connecting with homeless adolescents

Adolescents from a variety of backgrounds are among the growing number of homeless Americans. Although they lack maturity and various skills, they manage to survive in dangerous and stressful environments. This article asserts that social policy that leads to services such as housing, education, and healthcare should be based on a philosophy, ethic, and theory of caring and connectedness, which have been shown to protect adolescents as they mature. The article includes brief descriptions of theories of caring, pathways to homelessness for adolescents, survival needs of homeless youth, and characteristics of service programs that incorporate caring and connectedness.

Sexually transmitted diseases in the USA: temporal trends

This paper reviews the temporal trends in sexually transmitted diseases (STDs) and discusses the factors affecting the epidemiology of bacterial STDs.

Sexually transmitted disease rates and high-risk sexual behaviors in borderline personality disorder versus borderline personality disorder with substance use disorder

We examined the rates of sexually transmitted diseases (STDs) in women with borderline personality disorder (BPD) (using PDE and SCID-II) and substance abuse or dependence (SCID-I) (BPD-SUD) (N=82) compared with those with BPD-only (N=102), exploring mediators of this relationship. Participants were interviewed about STD history (gonorrhea, genital herpes, syphilis, trichomonas, human papillomavirus, and HIV), condom use, number of sexual partners, poverty, and prostitution. BPD-SUD appeared to be particularly at high risk for STDs, reporting significantly more STDs than BPD (F[1,172]=11.74, p=0.001, d=.27), particularly for gonorrhea, trichomonas, and human papillomavirus. The relationship between BPD-SUD and STDs is mediated by poverty, prostitution in the last year, recent unprotected sex with two or more partners, and >20 lifetime partners (z=-2.16 which is p=0.03), with prostitution alone making a significant contribution to this relationship (z=-2.49, p=0.01).

Prevalence of Chlamydia trachomatis infection among 'high risk' young people in New South Wales

International research on homeless adolescents has found that incidence and prevalence of sexually transmissible infections is relatively high. This study reports on a chlamydia prevalence survey conducted among high-risk young people (14-25 years) in New South Wales. The participants were recruited from youth health centres, which target homeless and high-risk youth. Of 333 clients (42.6% male), 84.1% were sexually active and mean number of sexual partners over the preceding 3 months was 1.4. Among sexually active participants, 24.6% claimed to use condoms always and 25% never. Sixteen of 274 available urine samples tested positive for Chlamydia trachomatis infection. Further research is warranted to better define high-risk groups and clarify the nature of associations between various factors impacting on sexual health. Most importantly, research is now called for into effective strategies for engaging and attracting young people to screening, treatment and contact tracing.

Sexually transmitted infections among urban shelter clients

BACKGROUND

Sexually transmitted infections (STIs) remain common in the United States. One contributor to this persistent problem is pockets of infection among persons who may not have regular access to health care, a group that includes those who seek services at shelters.

OBJECTIVE

The goals of the study were to: 1) determine the acceptability of STI testing among individuals seeking services at shelters in 2 midsized southeastern cities; 2) evaluate the prevalence of chlamydia, gonorrhea, syphilis, and HIV among these individuals; and 3) assess the proportion that subsequently learned their test results and received timely and appropriate treatment if warranted.

STUDY DESIGN

Using a cross-sectional design, 430 individuals between the ages of 19 and 45 seen at 3 shelters in 2 cities were approached for participation. After completing a brief behavioral assessment, each participant provided a urine specimen for Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (GC) testing, blood for syphilis serologic testing, and an oral sample for HIV testing.

RESULTS

The overall recruitment rate was 97% (96% in city A and 98% in city B). Seventy-eight percent were black with a mean age of 35.1 years. STI prevalence among those reporting sexual activity in the past 2 months was 12.9% in city A and 19.9% in city B (P = 0.04). The rate of CT in city B was significantly higher than city A (15.0% vs. 6.4%, P = 0.02); however, similar rates were found for GC (5.0% vs. 3.2%), primary and secondary syphilis (0.08% vs. 1.4%), and HIV (0.07% vs. 0.06%). Overall, 91.5% of the positive cases (89.0% in city A and 94.0% in city B) learned their test results and were successfully treated.

CONCLUSION

We found that shelter clients were receptive to STI testing, even for HIV, with most positive cases notified and successfully treated.

Newly homeless youth STD testing patterns over time

PURPOSE

To use the Behavioral Model for Vulnerable Populations to examine the predisposing and need characteristics of newly homeless youth that are associated with sexually transmitted disease (STD) testing over time.

METHODS

A longitudinal cohort of newly homeless youth from Los Angeles County (n = 261; ages 12-20 years) were followed for 24 months. Youth were interviewed at baseline, 3, 6, 12, 18, and 24 months, and asked about their background, housing situation, emotional distress (using the Brief-Symptom Inventory), substance use, sexual risk behaviors, and their STD testing rates. We modeled our longitudinal data using logistic random effects models.

RESULTS

Characteristics of homeless youth that were associated with STD testing in our multivariate model included time in study (odds ratio [OR] 1.3, 95% confidence interval [CI] 1.1-1.6), age at baseline (OR 1.2, 95% CI 1.1-1.4), being African-American (OR 2.7, 95% CI 1.4-5.3), being from a mixed race/ethnic group (OR 2.8, 95% CI 1.3-5.8), self-identifying as a gay/bisexual male (OR 2.9, 95% CI 1.2-6.9), self-identifying as a heterosexual female (OR 2.2, 95% CI 1.3-3.7), using amphetamines (OR 1.7, 95% CI 1.1-2.6), and history of having gotten someone/becoming pregnant (OR 2.3, 95% CI 1.4-3.9). Youth who lived in an apartment were less likely to have received an STD test than youth who lived in other types of housing (OR .4, 95% CI .2-.9). Sexual risk behaviors such as inconsistent condom use (OR 1.0, 95% CI .6-1.4) and number of sexual partners over past 3 months (OR 1.1, 95% CI 1.0-1.1) were not predictive of STD testing over time.

CONCLUSIONS

A need exists for interventions to target young newly homeless youth who engage in high-risk sexual behaviors to increase their STD testing rates and thereby decrease their risk for HIV infection.

Incidence and Prevalence of Herpes Simplex Virus Infections in Adolescent Women

OBJECTIVES

We conducted this study to examine the incidence, prevalence, and risk factors for herpes simplex virus (HSV) 1 and HSV 2 infection in a cohort of young women who were closely followed for acquisition of sexually transmitted infections.

STUDY DESIGN

Women between the ages of 14 and 18 years had blood and genital specimens obtained quarterly to test for incident sexually transmitted infections. Subjects also had 2 12-week periods each year when they kept a detailed behavioral diary and performed weekly vaginal swabs. Serum specimens were tested for HSV 1 and HSV 2 antibody, and genital specimens were tested for HSV DNA by PCR.

RESULTS

A total of 100 subjects enrolled and had at least 2 sera that could be analyzed for seroconversion. The mean age of the subjects was 15.8 years at entry. The HSV 1 and HSV 2 seroprevalence at entry was 59.6% and 13.5%, respectively. During the study, 4 subjects acquired HSV 1 antibody and 7 acquired HSV 2 antibody, but there were no cases of symptomatic HSV infection identified. The annualized incidence among susceptible individuals was 8.9% for HSV 1 and 7.4% for HSV 2. Three of the 7 HSV 2 sero-converters had HSV 2 DNA detected in vaginal swabs. Age, duration of sexual activity, and the presence of other sexually transmitted infections were predictors of HSV 2 antibody positivity.

CONCLUSIONS

Acquisition of HSV 1 and HSV 2 is relatively common in adolescent women, although symptomatic infection is uncommon. HSV 2 is shed in the genital tract despite the lack of symptoms.

Predictors of sexually transmitted infection testing among sexually active homeless youth

We examined the association between sexual risk behaviors and sexually transmitted infection (STI) testing in a sample of homeless youth. Of 261 youth interviewed, 50% had been sexually active in the past 3 months. Gender variation in sexual behaviors and risk were found. Boys were more likely than girls to engage in anal sex (46% vs. 15%), to have 3 or more sexual partners (46% vs. 17%) and to engage in anonymous sex (38% vs. 21%). Girls were less likely to use condoms consistently and more likely to engage in sex with a partner suspected of having an STI (20% vs. 4%). In the past 3 months, the STI testing rates were similar for boys and girls (46%). However, girls were more likely to have positive STI results (46% vs. 9%). In a multivariate logistic regression analysis, the only variable that was an independent predictor of STI testing was having either gotten someone or having become pregnant in the past 3 months. High-risk sexual behaviors did not predict STI testing in our sample. Outreach programs are needed that target sexually active homeless youth for early STI testing and treatment.

Street-based STD testing and treatment of homeless youth are feasible, acceptable and effective

PURPOSE

Current Centers for Disease Control (CDC) guidelines recommend that sexually transmitted disease (STD) screening measures for high-risk populations such as homeless youth prioritize testing in out-of-clinic settings and incorporate new approaches to STD eradication, such as field-delivered testing and treatment and patient-delivered partner therapy (PDPT). Our non-medically trained research staff offered field-based STI testing, field-delivered therapy, and PDPT to homeless youth in the context of a longitudinal study.

METHODS

A total of 218 ethnically diverse (34% female) 15-24-year-old homeless youth recruited from street sites in San Francisco completed an audio computer-administered self-interview survey and provided a first-void urine sample for testing for chlamydia (CT) and gonorrhea (GC). Youth testing positive were offered field-delivered therapy and PDPT. A random subset of 157 youth was followed prospectively, of whom 110 (70%) were interviewed and 87 (55%) retested at six months.

RESULTS

At baseline, 99% of youth in the study consented to STI testing, of whom 6.9% and .9% tested positive for CT and GC, respectively. Ninety-four percent of positive youth were treated, 50% within one week. The incidence rate for CT was 6.3 per 100 person-years (95% confidence interval [CI]: 1.3-18.4) and for GC was 4.2 per 100 person-years (95% CI: .5-15.2). None of the youth treated by study staff and tested six months later (n = 6) had CT or GC on follow-up testing (95% CI: 0-131.3).

CONCLUSIONS

Field-delivered testing and field-delivered therapy are feasible, acceptable and effective interventions for the diagnosis and treatment of STDs in homeless youth. These measures along with PDPT may decrease rates of subsequent reinfection.

The health of street youth: a Canadian perspective

OBJECTIVE

To review epidemiologic studies of the health of street youth in industrialized countries, with a special focus on Canadian youth.

METHODS

We identified 52 peer-reviewed studies from searches of the MEDLINE database and bibliographies of published papers, for data on blood-borne and sexually transmitted infections, mental health problems, pregnancy, violence and mortality.

RESULTS

Rates of hepatitis B, hepatitis C, and HIV infection are much higher among street youth than among their non-street peers. Likewise, the prevalence of all mental health problems assessed in street youth is greater than that in non-street youth. Pregnancy is more frequent among street than household youth. Street youth also experience high levels of violence: a large proportion report physical abuse or assault. Finally, mortality is about 11 times the expected rate based on age and sex and is mainly caused by suicide and drug overdose.

CONCLUSION

Current research results are useful to orient public health interventions for street youth, but further epidemiologic research is needed. The need for Canadian data is particularly acute in specific areas including mental health, violence, pregnancy, and sexually transmitted infections such as, for example, herpes infection and syphilis.

Seroprevalence of hepatitis B and C in juvenile detention entrants, Oregon, 1994-1996

We tested sera originally collected from 1335 juvenile detention entrants for an HIV study in 1994-1996 for hepatitis B virus (HBV) and hepatitis C virus (HCV) antibodies; we found that the seroprevalence of HBV and HCV antibody was 2% and 1%, respectively. HBV was associated with Asian race, whereas HCV infection was associated with injection drug use and female gender.

Hepatitis C virus infection, substance use and mental illness among homeless youth: a review

OBJECTIVES

Homeless youth are at a high risk of substance abuse, mental illness and blood-borne infections, such as hepatitis C. In this paper, we review the implications of these conditions, discuss the unique challenges faced by homeless youth, and explore potential strategies for harm reduction and intervention in this vulnerable population.

RESULTS

Interventions that combine youth-centered, service-based care, street outreach, case management, and motivational interviewing with integrated health services such as hepatitis A/B vaccination, and mental health and substance abuse programmes, are presented as innovative approaches to address the healthcare needs of homeless youth.

CONCLUSION

Recommendations for age-appropriate interventions and further research are made.

The epidemiology of sexually transmitted infections in adolescents

This article addresses the epidemiology of several common sexually transmitted infections (STIs) in adolescents. Chlamydia is a common occurrence in adolescents, more so than is gonorrhea, but both are of particular concern because they may cause pelvic inflammatory disease. Many experts recommend screening for chlamydia in sexually active adolescents, particularly females. Trichomonas vaginalis is significant as a marker for risk of contracting other STIs and because of its association with pregnancy complications and with increased risk of transmission of HIV. Genital herpes simplex virus (HSV) infection, which usually has been caused by HSV-2, is a common finding in adolescents, and it now is caused also by HSV-1 in some populations. Human papillomavirus (HPV), though widespread in adolescents, usually is a self-limited infection, and malignancy resulting from HPV is a rare occurrence in this age group. The least common of the diseases discussed below is syphilis, but a recent sharp increase in incidence has occurred in men who have sex with men.