A multi-jurisdictional outbreak of Salmonella Typhimurium infections linked to backyard poultry-Australia, 2020.

Zoonotic salmonellosis can occur either through direct contact with an infected animal or through indirect contact, such as exposure to an infected animal's contaminated environment. Between May and August 2020, a multi-jurisdictional outbreak of Salmonella Typhimurium (STm) infection due to zoonotic transmission was investigated in Australia. In total, 38 outbreak cases of STm with a median age of 5 years were reported. Epidemiological investigation showed contact with live poultry to be a common risk factor with most cases recently purchasing one-week old chicks from produce/pet stores. Traceback investigation of cases identified 25 product/pet stores of which 18 were linked to a single poultry breeder farm. On farm environmental sampling identified the same STm genotype as identified in cases. Whole genome sequencing of both environmental and human outbreak isolates found them to be highly related by phylogenetic analysis. This investigation describes the first documented widespread zoonotic salmonellosis outbreak in Australia attributed to backyard poultry exposure and identified potential risk factors and prevention and control measures for future outbreaks. Prevention of future outbreaks will require an integrated One Health approach involving the poultry industry, produce/pet store owners, animal healthcare providers, public health and veterinary health agencies and the public.

The sexual behaviours of adolescents aged between 14 and 17 years involved with the juvenile justice system in Australia: A community-based survey.

OBJECTIVES: To overcome key knowledge gaps in relation to justice involved and vulnerable young people and their sexual health and to compare this group with their peers from other youth health surveys in Australia to determine the extent of the issues. METHODS: Young people, aged between 14 and 17 years, who had ever been or were currently involved with the criminal justice system were purposively sampled. The survey was anonymous and delivered using Computer Assisted Telephone Interview (CATI). RESULTS: A total of 465 justice involved MeH-JOSH young people, aged between 14 and 17 years, participated in the study: 44% Aboriginal and/or Torres Strait Islander (Indigenous) and 37% not attending school. Of the total valid responses, 76% (n = 348) reported having ever had sex, with sexual initiation at a median age of 14 years. We compared these data with their peers in other Australian surveys and found that young people in our study had a higher engagement in sex and start having sex at a younger age, reporting more sexual partners at all ages. CONCLUSIONS: The sexual behaviours of young people involved in the justice system in this study suggest they may be at a greater risk for sexually transmissible infections than their age-matched peers in the general population. Policymakers should elevate them to a priority population for targeting sexual health services and health promotion.

Trends in hepatitis B prevalence and associated risk factors among Indigenous and non-Indigenous prison entrants in Australia, 2004 to 2013.

OBJECTIVE: This study describes and compares prevalence trends of markers for hepatitis B (HBV) from 2004 to 2013 and HBV risk factors between Indigenous and non-Indigenous prison entrants. METHODS: A cross-sectional survey carried out over two weeks in 2004, 2007, 2010 and 2013 in reception prisons in New South Wales, Queensland, Western Australia and Tasmania. RESULTS: The study included 2,223 prison entrants; 544 were Indigenous. Indigenous prison entrants had significantly higher hepatitis B core antibody (anti-HBc) prevalence than non-Indigenous prisoners in 2004 (29% vs. 18%, P=0.026), 2007 (40% vs. 15%, P<0.001) and 2010 (21% vs. 16% 2010, P=0.002), and similar anti-HBc prevalence to non-Indigenous entrants in 2013 (14% vs. 14%, P=0.888), with a significant decline from 2007 for Indigenous entrants (P=0.717)ᶺ . Being more than 30 years old and coming from an area classified as 'non-highly accessible' were associated with anti-HBc positivity in both populations. For Indigenous prison entrants, first time in prison and survey year was associated with anti-HBc positivity. For non-Indigenous participants, a history of injecting drug use and body piercings was associated with anti-HBc positivity. CONCLUSION: There are unique risk factors associated with HBV prevalence for both Indigenous and non-Indigenous prison entrants. Implications for public health: In developing public health programs and policies for HBV, consideration of similarities and differences of associated HBV risk factors between Indigenous and non-Indigenous offenders is required.

Use of multiple data sources to estimate hepatitis C seroprevalence among prisoners: A retrospective cohort study.

Hepatitis C is a major cause of preventable morbidity and mortality. Prisoners are a key population for hepatitis C control programs, and with the advent of highly effective therapies, prisons are increasingly important sites for hepatitis C diagnosis and treatment. Accurate estimates of hepatitis C prevalence among prisoners are needed in order to plan and resource service provision, however many prevalence estimates are based on surveys compromised by limited and potentially biased participation. We aimed to compare estimates derived from three different data sources, and to assess whether the use of self-report as a supplementary data source may help researchers assess the risk of selection bias. We used three data sources to estimate the prevalence of hepatitis C antibodies in a large cohort of Australian prisoners-prison medical records, self-reported status during a face-to-face interview prior to release from prison, and data from a statewide notifiable conditions surveillance system. Of 1,315 participants, 33.8% had at least one indicator of hepatitis C seropositivity, however less than one third of these (9.5% of the entire cohort) were identified by all three data sources. Among participants of known status, self-report had a sensitivity of 80.1% and a positive predictive value of 97.8%. Any one data source used in isolation would have under-estimated the prevalence of hepatitis C in this cohort. Using multiple data sources in studies of hepatitis C seroprevalence among prisoners may improve case detection and help researchers assess the risk of selection bias due to non-participation in serological testing.

Factors Associated With Sexual Coercion in a Representative Sample of Men in Australian Prisons.

Very little research has focused on men or prisoners as victims of sexual violence. This study provides the first population-based analysis of factors associated with sexual coercion of men in Australian prisons, and the first to use a computer-assisted telephone interview to collect this information in a prison setting. A random sample of men in New South Wales and Queensland prisons were surveyed using computer-assisted telephone interviewing. We asked participants about sexual coercion, defined as being forced or frightened into doing something sexually that was unwanted while in prison. Associations between sexual coercion in prison and sociodemographics, sexual coercion history outside of prison, and prison-related factors were examined. Logistic regression was used to estimate adjusted odds ratios in examining factors associated with sexual coercion in prisons. Of 2626 eligible men, 2000 participated. Participants identifying as non-heterosexual and those with a history of sexual coercion outside prison were found to be most at risk. Those in prison for the first time and those who had spent more than 5 years in prison ever were also more likely to report sexual coercion. Although prison policies and improving prison officer training may help address immediate safety and health concerns of those at risk, given the sensitivity of the issue and likely under-reporting to correctional staff, community-based organizations and prisoner peer-based groups arguably have a role too in providing both preventive and trauma-focused support.

Trends in HIV, hepatitis B and hepatitis C prevalence among Australian prisoners - 2004, 2007, 2010.

OBJECTIVE: To report the prevalence of markers for HIV infection, hepatitis B and hepatitis C among Australian prison entrants. DESIGN: Cross-sectional survey conducted over 2-week periods in 2004, 2007 and 2010. SETTING: Reception prisons in New South Wales, Queensland, Tasmania and Western Australia. PARTICIPANTS: Individuals entering prison from the community during the survey periods. MAIN OUTCOME MEASURE: Prevalence of anti-HIV antibody (anti-HIV), hepatitis B surface antigen (HBsAg), anti-hepatitis B core antibody (anti-HBc) and anti-hepatitis C virus antibody (anti-HCV). RESULTS: The study included 1742 prison entrants: 588 (33.8%) in 2004, 536 (30.8%) in 2007 and 618 (35.5%) in 2010. The age-standardised prevalence estimates for anti-HIV, HBsAg and anti-HBc were 0.4%, 2.3% and 21.7% respectively, and remained stable over the three survey periods. The age-standardised prevalence estimate for anti-HCV was 29.0%; it decreased over time (33.3% in 2004 v 23.2% in 2010; P = 0.001), and this coincided with a decrease in prison entrants reporting injecting drug use (58.3% [343/588] in 2004 v 45.3% [280/618] in 2010; P < 0.001). Among injecting drug users, the prevalence of anti-HCV was 57.2% and did not change significantly over time. Of those who were anti-HCV positive, 33.7% (140/415) were unaware of their infection status, and 74.3% (185/249) of those who tested positive for anti-HBc reported that they had never had hepatitis B. CONCLUSIONS: HIV prevalence is low in the Australian prisoner population but transmission remains a risk. Despite a decrease in the proportion of prison entrants reporting injecting drug use, prevalence of hepatitis B and hepatitis C has remained high. Treatment and prevention initiatives should be prioritised for this population.

A descriptive model of patient readiness, motivators, and hepatitis C treatment uptake among Australian prisoners.

BACKGROUND: Hepatitis C virus infection (HCV) has a significant global health burden with an estimated 2%-3% of the world's population infected, and more than 350,000 dying annually from HCV-related conditions including liver failure and liver cancer. Prisons potentially offer a relatively stable environment in which to commence treatment as they usually provide good access to health care providers, and are organised around routine and structure. Uptake of treatment of HCV, however, remains low in the community and in prisons. In this study, we explored factors affecting treatment uptake inside prisons and hypothesised that prisoners have unique issues influencing HCV treatment uptake as a consequence of their incarceration which are not experienced in other populations. METHOD AND FINDINGS: We undertook a qualitative study exploring prisoners' accounts of why they refused, deferred, delayed or discontinued HCV treatment in prison. Between 2010 and 2013, 116 Australian inmates were interviewed from prisons in New South Wales, Queensland, and Western Australia. Prisoners experienced many factors similar to those which influence treatment uptake of those living with HCV infection in the community. Incarceration, however, provides different circumstances of how these factors are experienced which need to be better understood if the number of prisoners receiving treatment is to be increased. We developed a descriptive model of patient readiness and motivators for HCV treatment inside prisons and discussed how we can improve treatment uptake among prisoners. CONCLUSION: This study identified a broad and unique range of challenges to treatment of HCV in prison. Some of these are likely to be diminished by improving treatment options and improved models of health care delivery. Other barriers relate to inmate understanding of their illness and stigmatisation by other inmates and custodial staff and generally appear less amenable to change although there is potential for peer-based education to address lack of knowledge and stigma.

Penile implants among prisoners-a cause for concern?

BACKGROUND: We report the prevalence of penile implants among prisoners and determine the independent predictors for having penile implants. Questions on penile implants were included in the Sexual Health and Attitudes of Australian Prisoners (SHAAP) survey following concerns raised by prison health staff that increasing numbers of prisoners reported having penile implants while in prison. METHODS: Computer-Assisted Telephone Interviewing (CATI) of a random sample of prisoners was carried out in 41 prisons in New South Wales and Queensland (Australia). Men were asked, "Have you ever inserted or implanted an object under the skin of your penis?" If they responded Yes: "Have you ever done so while you were in prison?" Univariate logistic regression and logistic regression were used to determine the factors associated with penile implants. RESULTS: A total of 2,018 male prisoners were surveyed, aged between 18 and 65 years, and 118 (5.8%) reported that they had inserted or implanted an object under the skin of their penis. Of these men, 87 (73%) had this done while they were in prison. In the multivariate analysis, a younger age, birth in an Asian country, and prior incarceration were all significantly associated with penile implants (p<0.001). Men with penile implants were also more likely to report being paid for sex (p<0.001), to have had body piercings (p<0.001) or tattoos in prison (p<0.001), and to have taken non-prescription drugs while in prison (p<0.05). CONCLUSIONS: Penile implants appear to be fairly common among prisoners and are associated with risky sexual and drug use practices. As most of these penile implants are inserted in prison, these men are at risk of blood borne viruses and wound infection. Harm reduction and infection control strategies need to be developed to address this potential risk.

Sexual behaviour and sexual health of Australian prisoners.

OBJECTIVE: To describe prisoners' sexual experiences and sexual practices while in the community, sexual identities, and sexual health (e.g. self-reported exposure to sexually transmissible infections (STIs) and female reproductive outcomes) using data from the Sexual Health and Attitudes of Australian Prisoners (SHAAP) survey. METHODS: This study used a computer-assisted telephone interview to screen randomly selected prisoners using a questionnaire based on the Australian Study of Health and Relationships survey. RESULTS: 2351 men and women prisoners from New South Wales and Queensland took part in the survey. Most men identified as heterosexual (95.7%) and reported sexual attraction (91.0%) and sexual experiences (86.6%) only with the opposite sex, but 28.5% of women prisoners identified as bisexual. Sexual attraction correlated with sexual experience (men: r=0.63; women: r=0.84) more than with sexual identity (men: r=0.53; women: r=0.54). Male prisoners reported more lifetime opposite-sex partners than women prisoners (median 24 v. 10). Women prisoners were more likely than men to report a prior STI (35.1% v. 20.0%). CONCLUSIONS: Prisoners are a high-risk group with regard to sexual health. There is a need for a better understanding of the sexual health of this population group so that education campaigns and interventions specific to this population group can be developed.

Consensual sex between men and sexual violence in Australian prisons.

Estimates of the incidence of sexual coercion in men's prisons are notoriously variable and fraught with conceptual and methodological problems. In 2006-2007, we conducted a computer-assisted telephone survey of a random sample of 2,018 male prisoners in New South Wales and Queensland. Of 2,626 eligible and available inmates, 76.8% consented and provided full responses. We asked about time in prison, sexual experience, attraction and (homo/bi/heterosexual) identity, attitudes, sexual contact with other inmates, reasons for having sex and practices engaged in, and about sexual coercion, including location and number of perpetrators. Most men (95.1%) identified as heterosexual. Of the total sample, 13.5% reported sexual contact with males in their lifetime: 7.8% only outside prison, 2.8% both inside and outside, and 2.7% only inside prison. Later in the interview, 144 men (7.1% of total sample) reported sexual contact with inmates in prison; the majority had few partners and no anal intercourse. Most did so for pleasure, but some for protection, i.e., to avoid assault by someone else. Before incarceration, 32.9% feared sexual assault in prison; 6.9% had been sexually threatened in prison and 2.6% had been sexually coerced ("forced or frightened into doing something sexually that [they] did not want"). Some of those coerced reported no same-sex contact. The majority of prisoners were intolerant of male-to-male sexual activity. The study achieved a high response rate and asked detailed questions to elicit reports of coercion and sex separately. Both consensual sex and sexual assault are less common than is generally believed.

Attitudes towards sex: a comparison of prisoners and the general community.

BACKGROUND: National population surveys of attitudes towards sexual issues typically exclude prisoners and little is known about their attitudes compared with the community. METHODS: Using computer-assisted telephone interviews, we compared a representative sample of 2289 prisoners (men=1960, women=329), aged 18-59 years, from two Australian states against a national community sample of 6755 participants (men=3333, women=3421). RESULTS: Overall, prisoners were slightly more conservative in their attitudes towards sex than the community. They were more likely than the community to agree with the statement that abortion is wrong (men: adjusted odds ratio (AOR)=3.3, 95% confidence interval (CI): 2.8-3.9; women: AOR=1.7, 95% CI: 1.2-2.4) and that male homosexuality is wrong (men: AOR=2.6, 95% CI: 2.2-3.1; women: AOR=1.7, 95% CI: 1.2-2.3); these differences were more pronounced for men than women. The attitudes of prisoners and the community varied with age. Attitudinal differences between prisoners and the community tended to be larger than the differences between women and men (agree that abortion is wrong: prisoners, AOR=0.5, 95% CI: 0.4-0.7; community, AOR=0.8, 95% CI: 0.7-0.9; agree that male homosexuality is wrong: prisoners, AOR=0.4, 95% CI: 0.3-0.5; community, AOR=0.6, 95% CI: 0.5-0.7). CONCLUSION: Prisoners have either similar or less accepting attitudes towards sex than the general population. These attitudes contrast with the higher engagement in risk behaviours reported by prisoners.

Psychological distress and experience of sexual and physical assault among Australian prisoners.

BACKGROUND: Prison populations are made up of individuals from disadvantaged, often abusive backgrounds, who are more likely to suffer from psychological problems than the general community. AIM: This study aimed to determine associations between current psychological distress and history of having experienced sexual coercion and/or physical assault among prisoners in two Australian states (Queensland and New South Wales). METHODS: We conducted a random sample survey of prisoners by computer-assisted telephone interview. Prisoners were asked about forced sexual encounters in or outside prison, and physical assault in prison. Psychological distress was estimated using a dichotomised score obtained from the Kessler 6-Item Psychological Distress Scale (K6), and a logistic regression analysis was employed to investigate associations. RESULTS: A total of 2426 prisoners were interviewed of 3055 prisoners invited to participate, a response rate of 79%. We categorised 236 men (12%) and 63 women (19%) as 'severely' psychologically distressed according to the K6, and 13% of the men and 60% of the women reported that they had been sexually coerced prior to imprisonment. Physical assault in prison was common, reported by 34% of the men and 24% of the women. On multivariate analysis, prisoners were more likely to be psychologically distressed if they had ever been threatened with sexual assault in prison or physically assaulted in prison. Sexual coercion outside prison was an important associate of psychological distress among men but not among women. CONCLUSIONS: As psychological distress and experiences of assault are closely statistically linked among male prisoners and both are very common among female prisoners, their screening for psychological distress should include efforts to find out about sexual and violent assaults against them both before and during imprisonment. Further, longitudinal research with prisoners is required to establish causal relationships.