Sexual Networks and STI Infection Among Young Black Men Who Have Sex With Women in a Southern U.S. City.

PURPOSE: The configuration of one's sexual network has been shown to influence sexually transmitted infection (STI) acquisition in some populations. Young Black men who have sex with women (MSW) have high rates of STIs, yet little is known about their sexual networks. The purpose of this study is to describe the characteristics of sexual networks and their association with selected STI infections among young Black MSW. METHODS: Black MSW aged 15-26 years who were enrolled in the New Orleans community-based screening program named Check It from March 2018 to March 2020 were tested for C. trachomatis and N. gonorrhoeae infection and asked about the nature of their sexual partnerships. Sexual partnerships with women were defined as dyadic, somewhat dense (either themselves or their partner had multiple partners), and dense (both they and their partner(s) had multiple partners). RESULTS: Men (n = 1,350) reported 2,291 sex partners. The percentage of men who reported their networks were dyadic, somewhat dense, and dense was 48.7%, 27.7%, and 23.3%, respectively; 11.2% were STI-positive and 39.2% thought their partner(s) had other partners. Compared to men in dyadic relationships, those in somewhat dense network did not have increased risk of STI infection, but those in dense networks were more likely to have an STI (adjusted odds ratio = 2.06, 95% confidence interval [1.35-3.13]). DISCUSSION: Young Black MSW, who had multiple partners and who thought their partner(s) had other sex partners were at highest risk for STIs. Providers should probe not only about the youth's personal risk but should probe about perceived sexual partners' risk for more targeted counseling/STI testing.

Diverging Neisseria gonorrhoeae Morbidity in Non-Hispanic Black and White Females: Application of Group-Based Trajectory Modeling to Trends in County-Level Morbidity 2003-2018.

National trends in gonorrhea rates may obscure informative local variations in morbidity. We used group-based trajectory models to identify groups of counties with similar gonorrhea rate trajectories among non-Hispanic White (NHW) and non-Hispanic Black (NHB) females using county-level data on gonorrhea cases in US females from 2003 to 2018. We assessed models with 1-15 groups and selected final models based on fit statistics and identification of divergent trajectory groups with distinct intercepts and/or slopes. We mapped counties by assigned trajectory group and examined the association of county characteristics with group membership. We identified 7 distinct gonorrhea trajectory groups for NHW females and 9 distinct trajectory groups for NHB females. All identified groups for NHW female morbidity experienced increasing gonorrhea rates with a limited range (11.6-183.3/100,000 NHW females in 2018); trajectories of NHB female morbidity varied widely in rates (146.6-966.0/1000 NHB females in 2018) and included 3 groups of counties that experienced a net decline in gonorrhea rates. Counties with higher NHW female morbidity had lower adult sex ratios, lower health insurance coverage, and lower marital rates among NHW adults. Counties with higher NHB female morbidity were more urban, experienced higher rates of poverty, and had lower rates of marriage among NHB adults. Morbidity patterns did not always follow geographic proximity, which could be explained by variation in social determinants of health. Our results demonstrated a highly heterogenous gonorrhea epidemic among NHW and NHB US females, which should prompt further analysis into the differential drivers of gonorrhea morbidity.

Diagnosis and Treatment of Sexually Transmitted Infections: A Review.

Importance: Approximately 1 in 5 adults in the US had a sexually transmitted infection (STI) in 2018. This review provides an update on the epidemiology, diagnosis, and treatment of gonorrhea, chlamydia, syphilis, Mycoplasma genitalium, trichomoniasis, and genital herpes. Observations: From 2015 to 2019, the rates of gonorrhea, chlamydia, and syphilis increased in the US; from 1999 to 2016, while the rates of herpes simplex virus type 1 (HSV-1) and HSV-2 declined. Populations with higher rates of STIs include people younger than 25 years, sexual and gender minorities such as men and transgender women who have sex with men, and racial and ethnic minorities such as Black and Latinx people. Approximately 70% of infections with HSV and trichomoniasis and 53% to 100% of extragenital gonorrhea and chlamydia infections are asymptomatic or associated with few symptoms. STIs are associated with HIV acquisition and transmission and are the leading cause of tubal factor infertility in women. Nucleic acid amplification tests have high sensitivities (86.1%-100%) and specificities (97.1%-100%) for the diagnosis of gonorrhea, chlamydia, M genitalium, trichomoniasis, and symptomatic HSV-1 and HSV-2. Serology remains the recommended method to diagnose syphilis, typically using sequential testing to detect treponemal and nontreponemal (antiphospholipid) antibodies. Ceftriaxone, doxycycline, penicillin, moxifloxacin, and the nitroimidazoles, such as metronidazole, are effective treatments for gonorrhea, chlamydia, syphilis, M genitalium, and trichomoniasis, respectively, but antimicrobial resistance limits oral treatment options for gonorrhea and M genitalium. No cure is available for genital herpes. Effective STI prevention interventions include screening, contact tracing of sexual partners, and promoting effective barrier contraception. Conclusions and Relevance: Approximately 1 in 5 adults in the US had an STI in 2018. Rates of gonorrhea, chlamydia, and syphilis in the US have increased, while rates of HSV-1 and HSV-2 have declined. Ceftriaxone, doxycycline, penicillin, moxifloxacin, and the nitroimidazoles are effective treatments for gonorrhea, chlamydia, syphilis, Mycoplasma genitalium, and trichomoniasis, respectively, but antimicrobial resistance limits oral therapies for gonorrhea and Mycoplasma genitalium, and no cure is available for genital herpes.

Trends and Characteristics of Sexually Transmitted Infections During Pregnancy: United States, 2016-2018.

Objectives-This report presents data on recent trends for three sexually transmitted infections (STIs)-chlamydia, gonorrhea, and syphilis-reported among women giving birth in the United States from 2016 through 2018, and rates by selected characteristics for 2018. Methods-Data are from birth certificates and are based on 100% of births registered in the United States for 2016, 2017, and 2018. Birth certificate data on infections during pregnancy are recommended to be collected from the mother's medical records (1). Mothers are to be reported as having an infection if there is a confirmed diagnosis or documented treatment for the infection in their medical record (2). Results-Among women giving birth in 2018, the overall rates of chlamydia, gonorrhea, and syphilis were 1,843.9, 310.2, and 116.7 per 100,000 births, respectively. The rates for these STIs increased 2% (chlamydia), 16% (gonorrhea), and 34% (syphilis) from 2016 through 2018. In 2018, rates of chlamydia and gonorrhea decreased with advancing maternal age, whereas those for syphilis decreased with maternal age through 30-34 years and then increased for women aged 35 and over. In 2018, rates of all three STIs were highest for non-Hispanic black women, women who smoked during pregnancy, women who received late or no prenatal care, and women for whom Medicaid was the principal source of payment for the delivery. Among women aged 25 and over, rates of each of the STIs decreased with increasing maternal education.

Gonorrhea Prevalence Among Young Women and Men Entering the National Job Training Program, 2000-2017.

Objectives. To examine long-term gonorrhea prevalence trends from a sentinel surveillance population of young people at elevated risk for gonorrhea.Methods. We analyzed annual cross-sectional urogenital gonorrhea screening data from 191 991 women (2000-2017) and 224 348 men (2003-2017) 16 to 24 years of age entering the National Job Training Program, a US vocational training program. We estimated prevalence among women using an expectation-maximization algorithm incorporated into a logistic regression to account for increases in screening test sensitivity; log-binomial regression was used to estimate prevalence among men.Results. The adjusted gonorrhea prevalence among women followed a U-shaped curve, falling from 2.9% to 1.6% from 2000 through 2011 before rising to 2.7% in 2017. The prevalence among men declined from 1.4% to 0.8% from 2003 through 2017. In the case of both women and men, the prevalence was highest across all study years among those who were Black or American Indian/Alaska Native and those who resided in the South or Midwest.Conclusions. Trends among National Job Training Program enrollees suggest that gonorrhea prevalence is rising among young women while remaining low and steady among young men.

Transactional Sex and Incident Chlamydia and Gonorrhea Among Black Men Who Have Sex With Men in Atlanta, Georgia.

BACKGROUND: Black men who have sex with men (BMSM) are disproportionately affected by sexually transmitted infections (STI), including chlamydia and gonorrhea. Transactional sex is an hypothesized risk factor for STI acquisition in BMSM. METHODS: We estimated the association of transactional sex with incident chlamydia/gonococcal infection among BMSM using longitudinal data from a randomized trial in Atlanta (2012-2015). BMSM were eligible for inclusion if they tested human immunodeficiency virus (HIV)-antibody-negative and reported both ≥2 male sex partners and any condomless anal sex in the last year. We defined chlamydia/gonorrhea incidence as the first occurrence of either rectal or urogenital chlamydia or gonococcal infections after a negative result at enrollment. We used Poisson regression to estimate the incidence rate (IR) for chlamydia/gonorrhea over 12 months. Incidence rate ratios (IRR) compared estimates by reported experience of transactional sex. Subgroup analyses assessed potential heterogeneity by age and sexual identity. RESULTS: This analysis included 416 BMSM, of whom 191 (46%) were gay-identified, 146 (42%) reported a history of transactional sex, and 57 (14%) had prevalent chlamydia/gonococcal infection at baseline. Over a median of 1 year of follow-up, an additional 55 men tested laboratory-positive for chlamydia/gonorrhea (IR, 17.3 per 100 person-years). Transactional sex was not associated with chlamydia/gonorrhea incidence overall. However, among gay-identified BMSM, transactional sex was associated with incident chlamydia/gonorrhea (IRR, 2.9; 95% confidence interval, 1.2-6.8). CONCLUSIONS: Economic and social vulnerabilities may motivate engagement in high-risk sexual behaviors through commodified sex, potentially increasing the burden of STIs among BMSM. In this investigation, the relationship between transactional sex and chlamydia/gonorrhea was not homogenous across BMSM with diverse sexual identities in Atlanta, suggesting that within select sexual networks, transactional sex may drive STI risks. Delivering accessible and targeted STI screening for marginalized BMSM should be prioritized for STI and HIV prevention.

The influence of race and sex on gonorrhea and chlamydia treatment in the emergency department.

BACKGROUND: Emergency Departments (EDs) are a care source for patients with sexually transmitted diseases (STDs). St. Louis, MO reports among the highest rates of gonorrhea and chlamydia infection. We examined STD treatment in a high-volume urban ED, in St. Louis MO, to identify factors that may influence treatment. METHODS: A retrospective chart review and analysis was conducted on visits to a high volume, academic ED in St. Louis, MO where patients received a gonorrhea/chlamydia nucleic acid amplification test (NAAT) with a valid matching test result over two years. Using multiple logistic regression, we examined available predictors for under and overtreatment. RESULTS: NAATs were performed on 3.3% of all ED patients during the study period. Overall prevalence was 6.9% for gonorrhea (95% CI: 6.2, 7.7) and 11.6% for chlamydia (95% CI: 10.6, 12.5). Race was not a statistically significant predictor for undertreatment but Black patients were significantly more likely to be overtreated compared to White patients. (OR 1.83, 95% CI: 1.5, 2.2). Females were more likely to be undertreated when positive for infection compared to males (OR 7.34, 95% CI: 4.8, 11.2) and less likely to be overtreated when negative for infection (OR 0.27, 95% CI: 0.2, 0.3). CONCLUSION: The burden of STDs in a high-volume academic ED was significant and treatment varied across groups. Attention should be paid to particular groups, specifically women and patients reporting Black as their race, to ensure appropriate treatment is administered. Patients would benefit from targeted STD management protocols and training in the ED.

Two Distinct Gonorrhea Trends and Risk Factors Among Women in Australia.

BACKGROUND: In recent years, gonorrhea notifications have increased in women in Australia and other countries. We measured trends over time and risk factors among Australian Aboriginal and Torres Strait Islander ("Aboriginal") and non-Aboriginal women. METHODS: We conducted a cross-sectional analysis of data from 41 sexual health clinics. Gonorrhea positivity at each patient's first visit (first-test positivity) during the period 2009 to 2016 was calculated. Univariate and multivariate analyses assessed risk factors for first-test positivity in Aboriginal and non-Aboriginal women. RESULTS: Gonorrhea positivity decreased among Aboriginal women (7.1% in 2009 to 5.2% in 2016, P < 0.001) and increased among non-Aboriginal women (0.6%-2.9%, P < 0.001). Among Aboriginal women, first-test positivity was independently associated with living in a regional or remote area (adjusted odds ratio [aOR], 4.29; 95% confidence interval [CI], 2.52-7.31; P < 0.01) and chlamydia infection (aOR, 4.20; 95% CI,3.22-5.47; P < 0.01). Among non-Aboriginal women, first-test positivity was independently associated with greater socioeconomic disadvantage (second quartile: aOR, 1.68 [95% CI, 1.31-2.16; P < 0.01]; third quartile: aOR, 1.54 [95% CI, 1.25-1.89; P < 0.01]) compared with least disadvantaged quartile: recent sex work (aOR, 1.69; 95% CI, 1.37-2.08; P < 0.01), recent injecting drug use (aOR, 1.85; 95% CI, 1.34-2.57; P < 0.01), and chlamydia infection (aOR, 2.35; 95% CI, 1.90-2.91; P < 0.01). For non-Aboriginal women, being aged 16 to 19 years (aOR, 0.62; 95% CI, 0.49-0.80; P < 0.01) compared with those ≥30 years was a protective factor. CONCLUSIONS: These findings highlight 2 different epidemics and risk factors for Aboriginal and non-Aboriginal women, which can inform appropriate health promotion and clinical strategies.

Ethnically diverse urban transmission networks of Neisseria gonorrhoeae without evidence of HIV serosorting.

OBJECTIVE: We aimed to characterise gonorrhoea transmission patterns in a diverse urban population by linking genomic, epidemiological and antimicrobial susceptibility data. METHODS: Neisseria gonorrhoeae isolates from patients attending sexual health clinics at Barts Health NHS Trust, London, UK, during an 11-month period underwent whole-genome sequencing and antimicrobial susceptibility testing. We combined laboratory and patient data to investigate the transmission network structure. RESULTS: One hundred and fifty-eight isolates from 158 patients were available with associated descriptive data. One hundred and twenty-nine (82%) patients identified as male and 25 (16%) as female; four (3%) records lacked gender information. Self-described ethnicities were: 51 (32%) English/Welsh/Scottish; 33 (21%) white, other; 23 (15%) black British/black African/black, other; 12 (8%) Caribbean; 9 (6%) South Asian; 6 (4%) mixed ethnicity; and 10 (6%) other; data were missing for 14 (9%). Self-reported sexual orientations were 82 (52%) men who have sex with men (MSM); 49 (31%) heterosexual; 2 (1%) bisexual; data were missing for 25 individuals. Twenty-two (14%) patients were HIV positive. Whole-genome sequence data were generated for 151 isolates, which linked 75 (50%) patients to at least one other case. Using sequencing data, we found no evidence of transmission networks related to specific ethnic groups (p=0.64) or of HIV serosorting (p=0.35). Of 82 MSM/bisexual patients with sequencing data, 45 (55%) belonged to clusters of ≥2 cases, compared with 16/44 (36%) heterosexuals with sequencing data (p=0.06). CONCLUSION: We demonstrate links between 50% of patients in transmission networks using a relatively small sample in a large cosmopolitan city. We found no evidence of HIV serosorting. Our results do not support assortative selectivity as an explanation for differences in gonorrhoea incidence between ethnic groups.

The epidemiology of HIV and other sexually transmitted infections in African, Caribbean and Black men in Toronto, Canada.

BACKGROUND: African, Caribbean, and Black (Black) men account for 16.5% of new HIV diagnoses among men in Ontario. There is substantial evidence that sexually transmitted infections (STIs) are associated with increased likelihood of HIV infection; however, little is known regarding the prevalence of HIV/STI co-infections among Black men in Toronto. Progress has been made in understanding factors contributing to racial/ethnic disparities in HIV between among men who have sex with men (MSM). In this study, we investigate within-racial group patterns of HIV/STI infection between Black MSM and Black men who only have sex with women (MSW). METHODS: A cross-sectional descriptive epidemiological study was conducted with a non-probability sample of Black men recruited from Toronto, Ontario. Audio Computer Assisted Self-Interviews (ACASI) surveys were used to collect demographic and behavioral data. Biological specimens were collected to screen for HIV and other STIs. Chi-Square tests were used to compare the prevalence of (1) HIV and current STIs between MSM and MSW and (2) current STIs between people living with HIV and people not living with HIV. Logistic regression models were constructed to assess whether or not history of STIs were associated with current HIV infection. RESULTS: The prevalence of HIV (9.2%), syphilis (7.2%), hepatitis B (2.7%), and high-risk anal HPV (8.4%) and penile HPV (21.3%) infections were high in Black men (N = 487) and were significantly increased in Black MSM compared with MSW; the prevalence of syphilis and high-risk HPV were also increased in men living with HIV. Men with a history of syphilis (OR = 6.48, 95% CI: 2.68,15.71), genital warts (OR = 4.32, 95% CI: 1.79,10.43) or genital ulcers (OR = 21.3, 95% CI: 1.89,239.51) had an increased odds of HIV infection. CONCLUSIONS: The HIV/STI prevalence was high among this sample of Black men, although the study design may have led to oversampling of men living with HIV. The associations between STIs and current HIV infection highlight the need for integrated of HIV/STI screening and treatment programs for Black men. Public health strategies are also needed to reduce disproportionate HIV/STI burden among Black MSM-including improving HPV vaccine coverage.

Extragenital Chlamydia and Gonorrhea in Young Black Men Who Have Sex With Men: Missed Treatment Opportunities for Human Immunodeficiency Virus-Infected Men Who Have Sex With Men?

OBJECTIVES: This study of young black men who have sex with men (YBMSM) assessed the prevalence of extragenital chlamydia and gonorrhea among those testing negative for urethral infections, and compared prevalence of both by human immunodeficiency virus (HIV) status. METHODS: A convenience sample of 609 YBMSM was recruited for a cross-sectional study from 2 sexual health clinics located in Jackson, MS. To detect Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG), nucleic acid amplification testing was performed on urine, rectal swabs, and oral swabs. OraSure was used to detect HIV. RESULTS: Seventy-three percent of all chlamydia infections and 77% of gonorrhea infections were found from anal and oral swabs in the absence of urethral positivity. Compared with HIV-uninfected men, HIV-infected men were significantly more likely to have pharyngeal chlamydia (P = 0.03), multiple CT infections (P = 0.02), rectal NG (P < 0.001), multiple NG infections (P = 0.04), both CT/NG rectal infections (P = 0.001). CONCLUSIONS: As much as three quarters of all chlamydia and gonorrhea infections may be missed when only urine-based nucleic acid amplification testing is used to screen YBMSM for bacterial sexually transmitted infections. These missed opportunities for diagnosis may be particularly likely among HIV-infected YBMSM.

Assessing Spatial Relationships between Race, Inequality, Crime, and Gonorrhea and Chlamydia in the United States.

Incidence rates of chlamydia and gonorrhea reached unprecedented levels in 2015 and are concentrated in southern counties of the USA. Using incidence data from the Center for Disease Control, Moran's I analyses assessed the data for statistically significant clusters of chlamydia and gonorrhea at the county level in 46 states of the USA. Lagrange multiplier diagnostics justified selection of the spatial Durbin regression model for chlamydia and the spatial error model for gonorrhea. Rates of chlamydia (Moran's I = .37, p < .001) and gonorrhea (Moran's I = .38, p < .001) were highly clustered particularly in the southern region of the USA. Logged percent in poverty (B = .49, p < .001 and B = .48, p < .001) and racial composition of African-Americans (B = .16, p < .001 and B = .40, p < .001); Native Americans (B = .12, p < .001 and B = .20, p < .001); and Asians (B = .14, p < .001 and B = .09, p < .001) were significantly associated with greater rates of chlamydia and gonorrhea, respectively, after accounting for spatial dependence in the data. Logged rates of rates violent crimes were associated with chlamydia (B = .053, p < .001) and gonorrhea (B = .10, p < .001). Logged rates of drug crimes (.052, p < .001) were only associated with chlamydia. Metropolitan census designation was associated with logged rates of chlamydia (B = .12, p < .001) and gonorrhea (B = .24, p < .001). Spatial heterogeneity in the distribution of rates of chlamydia and gonorrhea provide important insights for strategic public health interventions in the USA and inform the allocation of limited resources for the prevention of chlamydia and gonorrhea.

Using Reported Rates of Sexually Transmitted Diseases to Illustrate Potential Methodological Issues in the Measurement of Racial and Ethnic Disparities.

BACKGROUND: Racial disparities in the burden of sexually transmitted diseases (STDs) have been documented and described for decades. Similarly, methodological issues and limitations in the use of disparity measures to quantify disparities in health have also been well documented. The purpose of this study was to use historic STD surveillance data to illustrate four of the most well-known methodological issues associated with the use of disparity measures. METHODS: We manually searched STD surveillance reports to find examples of racial/ethnic distributions of reported STDs that illustrate key methodological issues in the use of disparity measures. The disparity measures we calculated included the black-white rate ratio, the Index of Disparity (weighted and unweighted by subgroup population), and the Gini coefficient. RESULTS: The 4 examples we developed included illustrations of potential differences in relative and absolute disparity measures, potential differences in weighted and nonweighted disparity measures, the importance of the reference point when calculating disparities, and differences in disparity measures in the assessment of trends in disparities over time. For example, the gonorrhea rate increased for all minority groups (relative to whites) from 1992 to 1993, yet the Index of Disparity suggested that racial/ethnic disparities had decreased. CONCLUSIONS: Although imperfect, disparity measures can be useful to quantify racial/ethnic disparities in STDs, to assess trends in these disparities, and to inform interventions to reduce these disparities. Our study uses reported STD rates to illustrate potential methodological issues with these disparity measures and highlights key considerations when selecting disparity measures for quantifying disparities in STDs.

Increased incidence of gonorrhoea and chlamydia in Greenland 1990-2012.

BACKGROUND: Since the 1970s, Greenland has presented the highest reported incidence rates of the sexually transmitted infections (STIs) gonorrhoea and chlamydia in the Arctic regions. OBJECTIVE: This study aims to describe sex- and age-specific incidence rates of gonorrhoea and chlamydia from 1990 to 2012 in Greenland, and to evaluate if changes in case definitions, diagnostic procedures and implementation of STI interventions during the period coincide with rate changes. DESIGN: Gonorrhoea and chlamydia cases were identified from the national STI surveillance. For 1990-2008, STI cases were identified from weekly notified aggregated data. For 2009-2012, cases were identified in person-identifiable national registers. We used log-linear Poisson regression to calculate incidence rates (IRs) and incidence rate ratios (IRRs) with 95% confidence intervals (95% CI). Analyses were stratified according to sex, age and calendar period. RESULTS: Gonorrhoea and chlamydia incidence rates have increased since 1995 to reach 2,555 per 100,000 person-years (PY) for gonorrhoea and 6,403 per 100,000 PY for chlamydia in 2012. From 2006 to 2012, the incidence rates among young adults aged 15-19 years were 8,187 and 22,515 per 100,000 PY for gonorrhoea and chlamydia, respectively. Changes in surveillance reporting did not seem to influence the incidence rates for either disease, whereas a change in diagnostic test coincided with an increased incidence of chlamydia. CONCLUSION: Overall, the incidence of chlamydia in Greenland increased during the study period, whereas the incidence of gonorrhoea decreased until 1995 but increased thereafter. Young adults aged 15-24 years were at highest risk of infection. The increase in incidence rates was independent of changes in case definitions, whereas an observed increase in chlamydia incidence in 2005 coincided with a change in diagnostic test. None of the STI interventions launched after 1995 seemed to coincide with decreasing national incidence rates.

Is there an ethnic variation in the epidemiology of gonorrhoea? A retrospective population-based study from northern Israel over 15†years between 2001 and 2015.

OBJECTIVE: To investigate the trends in the incidence of gonorrhoea through an extended period of time and to compare the epidemiology of gonorrhoea infection between 2 distinct ethnic groups (Jews and Arabs). DESIGN: A retrospective population-based cohort study was conducted on all consecutive patients diagnosed with gonorrhoea through the years 2001-2015. SETTING: National Department of Epidemiology of the Ministry of Health, Haifa District, Israel. PARTICIPANTS: A total of 837 reports on gonorrhoea were received, derived from 779 (93.1%) male and 58 (6.9%) female patients. Approximately 1 million people reside in the Haifa region. PRIMARY AND SECONDARY OUTCOME MEASURES: We examined the incidence rate of gonorrhoea among residents of Haifa District, northern Israel from 2001 to 2015, by reviewing archives of the Department of Epidemiology, Israeli Ministry of Health. Notified cases were stratified by age, gender and ethnicity. RESULTS: The overall gonorrhoea incidence was 6.4 cases per 100 000 population per year. The annual incidence rate dropped from 20.5 per 100 000 population in 2001 to a period of 2.2 cases per 100 000 population in 2005, showing a >9-fold decline. This was followed by a relatively steady increase of incidence of 2.5-4.5 per 100 000 population from 2006 to 2015. Men were predominantly more affected than women, with a 13.4-fold higher incidence rate. The most affected age group was residents between 25 and 34 years old. The estimated rate among Jews was 2.5-fold higher relative to Arabs. Only 1.3% recurrent episodes of gonorrhoea were reported. The prevalence of HIV positivity among patients with gonorrhoea is significantly higher than that of the general population (500.0 vs 88.1 cases per 100 000 population, respectively, p<0.001). CONCLUSIONS: Gonorrhoea incidence rate decreased dramatically until 2005, with no substantial subsequent fluctuations. The infection is much more prevalent among patients of Jewish ethnicity, possibly due to riskier sex practices.

Trends in chlamydia and gonorrhoea testing and positivity in Western Australian Aboriginal and non-Aboriginal women 2001-2013: a population-based cohort study.

BACKGROUND: This study aimed to examine trends in chlamydia and gonorrhoea testing and positivity in Aboriginal and non-Aboriginal women of reproductive age. METHODS: A cohort of 318002 women, born between 1974 and 1995, residing in Western Australia (WA) was determined from birth registrations and the 2014 electoral roll. This cohort was then probabilistically linked to all records of chlamydia and gonorrhoea nucleic acid amplification tests conducted by two large WA pathology laboratories between 1 January 2001 and 31 December 2013. Trends in chlamydia and gonorrhoea testing and positivity were investigated over time and stratified by Aboriginality and age group. RESULTS: The proportion of women tested annually for chlamydia increased significantly between 2001 and 2013 from 24.5% to 36.6% in Aboriginal and 4.0% to 8.5% in non-Aboriginal women (both P-values <0.001). Concurrent testing was high (>80%) and so patterns of gonorrhoea testing were similar. Chlamydia and gonorrhoea positivity were substantially higher in Aboriginal compared with non-Aboriginal women; age-, region- and year-adjusted incidence rate ratios were 1.52 (95% confidence interval (CI) 1.50-1.69, P<0.001) and 11.80 (95% CI 10.77-12.91, P<0.001) respectively. Chlamydia positivity increased significantly in non-Aboriginal women aged 15-19 peaking in 2011 at 13.3% (95% CI 12.5-14.2%); trends were less consistent among 15-19-year-old Aboriginal women but positivity also peaked in 2011 at 18.5% (95% CI 16.9-20.2%). Gonorrhoea positivity was 9.7% (95% CI 9.3-10.1%), 6.7% (95% CI 6.4-7.0%), 4.7% (4.4-5.0%), and 3.1% (2.8-3.4%) among Aboriginal women aged respectively 15-19, 20-24, 25-29 and ≥30 years, compared with <1% in all age groups in non-Aboriginal women. Over time, gonorrhoea positivity declined in all age groups among Aboriginal and non-Aboriginal women. CONCLUSION: Between 2001 and 2013 in WA chlamydia and gonorrhoea positivity remained highest in young Aboriginal women despite chlamydia positivity increasing among young non-Aboriginal women. More effective prevention strategies, particularly for young Aboriginal women, are needed to address these disparities.

Patient, staffing and health centre factors associated with annual testing for sexually transmissible infections in remote primary health centres.

BACKGROUND: In high-incidence Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) settings, annual re-testing is an important public health strategy. Using baseline laboratory data (2009-10) from a cluster randomised trial in 67 remote Aboriginal communities, the extent of re-testing was determined, along with the associated patient, staffing and health centre factors. METHODS: Annual testing was defined as re-testing in 9-15 months (guideline recommendation) and a broader time period of 5-15 months following an initial negative CT/NG test. Random effects logistic regression was used to determine factors associated with re-testing. RESULTS: Of 10559 individuals aged ≥16 years with an initial negative CT/NG test (median age=25 years), 20.3% had a re-test in 9-15 months (23.6% females vs 15.4% males, P<0.001) and 35.2% in 5-15 months (40.9% females vs 26.5% males, P<0.001). Factors independently associated with re-testing in 9-15 months in both males and females were: younger age (16-19, 20-24 years); and attending a centre that sees predominantly (>90%) Aboriginal people. Additional factors independently associated with re-testing for females were: being aged 25-29 years, attending a centre that used electronic medical records, and for males, attending a health centre that employed Aboriginal health workers and more male staff. CONCLUSIONS: Approximately 20% of people were re-tested within 9-15 months. Re-testing was more common in younger individuals. Findings highlight the importance of recall systems, Aboriginal health workers and male staff to facilitate annual re-testing. Further initiatives may be needed to increase re-testing.

Trends in Selected Measures of Racial and Ethnic Disparities in Gonorrhea and Syphilis in the United States, 1981-2013.

BACKGROUND: The purpose of this study was to examine selected measures of racial and ethnic disparities in the reported incidence of syphilis and gonorrhea from 1981 to 2013 in the United States. METHODS: For each year, from 1981 to 2013, we calculated values for 5 disparity measures (Gini coefficient, 2 versions of the index of disparity, population attributable proportion, and the black-to-white rate ratio) for 5 racial/ethnic categories (non-Hispanic white, non-Hispanic black, Hispanic, American Indian/Alaska Native, and Asian/Pacific Islander). We also examined annual and 5-year changes to see if the disparity measures agreed on the direction of change in disparity. RESULTS: With a few exceptions, the disparity measures increased from 1981 to 1993 and decreased from 1993 to 2013, whereas syphilis and gonorrhea rates decreased for most groups from 1981 to 1993 and increased from 1993 to 2013. Overall, the disparity measures we examined were highly correlated with one another, particularly when examining 5-year changes rather than annual changes in disparity. For example, all 5 measures agreed on the direction of change in the disparity of syphilis in 56% of the annual comparisons and in 82% of the 5-year comparisons. CONCLUSIONS: Although the disparity measures we examined were generally consistent with one another, these measures can sometimes yield divergent assessments of whether racial/ethnic disparities are increasing or decreasing for a given sexually transmitted disease from one point in time to another, as well as divergent assessments of the relative magnitude of the change.

High chlamydia and gonorrhoea repeat positivity in remote Aboriginal communities 2009-2011: longitudinal analysis of testing for re-infection at 3 months suggests the need for more frequent screening.

Background Extremely high rates of diagnosis of Chlamydia trachomatis (CT) and Neisseria gonorrhoeae (NG) have been recorded in remote communities across northern and central Australia. Re-testing at 3 months, after treatment administered, of CT or NG is recommended to detect repeat infections and prevent morbidity and ongoing transmission. METHODS: Baseline CT and NG laboratory data (2009-2010) from 65 remote health services participating in a cluster randomised trial was used to calculate the proportion of individuals re-tested after an initial CT or NG diagnosis at <2 months (not recommended), 2-4 months (recommended) and 5-12 months and the proportion with repeat positivity on re-test. To assess if there were difference in re-testing and repeat positivity by age group and sex, t-tests were used. RESULTS: There was a total of 2054 people diagnosed with CT and/or NG in the study period; 14.9% were re-tested at 2-4 months, 26.9% at 5-12 months, a total of 41.8% overall. Re-testing was higher in females than in males in both the 2-4-month (16.9% v. 11.5%, P<0.01) and 5-12-month (28.9% v. 23.5%, P=0.01) periods. Women aged 25-29 years had a significantly higher level of re-testing 5-12 months post-diagnosis than females aged 16-19 years (39.8% v. 25.4%, P<0.01). There was a total of 858 people re-tested at 2-12 months and repeat positivity was 26.7%. There was higher repeat NG positivity than repeat CT positivity (28.8% v. 18.1%, P<0.01). CONCLUSIONS: Just under half the individuals diagnosed with CT or NG were re-tested at 2-12 months post-diagnosis; however, only 15% were re-tested in the recommended time period of 2-4 months. The higher NG repeat positivity compared with CT is important, as repeat NG infections have been associated with higher risk of pelvic inflammatory disease-related hospitalisation. Findings have implications for clinical practice in remote community settings and will inform ongoing sexual health quality improvement programs in remote community clinics.

Increased Gonorrhea Cases - Utah, 2009-2014.

Gonorrhea (caused by infection with Neisseria gonorrhoeae) is the second most commonly reported notifiable disease in the United States (1). Left untreated, gonorrhea is associated with serious long-term adverse health effects, including pelvic inflammatory disease, ectopic pregnancy, and infertility. Infection also facilitates transmission of human immunodeficiency virus (2,3). Effective gonorrhea control relies upon early detection and effective antimicrobial treatment. To assess gonorrhea rate trends in Utah, the Utah Department of Health (UDOH) analyzed Utah National Electronic Disease Surveillance System (UT-NEDSS) data for the state during 2009-2014. After declining during 2009-2011, the statewide gonorrhea rate increased fivefold to 49 cases per 100,000 population in 2014. During 2009-2014, the proportion of cases among women increased from 21% to 39% (decreasing among males from 79% to 61%). Among male patients, the proportion who identified as men who have sex with men (MSM) decreased from 67% to 42%. These demographic changes suggest that increased heterosexual transmission of gonorrhea in Utah might be occurring. Health departments need to work with providers to ensure populations at high risk are being screened and properly treated for gonorrhea. Clinicians need to be aware of increases in the risk for infection among women and non-MSM males when making screening and testing decisions and educate their patients regarding gonorrhea transmission and prevention practices.