John Kaldor
Dados Biográficos
| ID | 353018 |
|---|---|
| NOME | John Kaldor |
| PRENOMES | John |
| SOBRENOME | Kaldor |
| ASSINATURA | KALDOR J |
| AFILIAÇÕES | UNSW Sydney |
| ORCID | 0000-0002-7639-4355 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 81 |
| TOTAL DE CITAÇÕES | 29 |
| TOTAL COMO AUTOR | 81 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1987 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2025 |
| ÍNDICE H | 3 |
Assessing the impact of the Covid-19 pandemic on uptake of HIV treatment in Bandung and Yogyakarta, Indonesia
COVID-19 pandemic known to affect health service deliveries including for HIV care support and treatment. In this retrospective study involving 2,780 people living with HIV (PLHIV), we evaluated impact of COVID-19 pandemic by comparing the proportion of PLHIV linked to care, started antiretroviral therapy (ART), retained in care (within the first 3 months of treatment), and adhered to ART (within the first 3 months of treatment) between the pre-p…
Utilising integrated bio-behavioural surveillance (IBBS) to investigate declining hepatitis C antibody prevalence among people who inject drugs in the Australian Needle and Syringe Program Survey
The temporal decline in HCV Ab prevalence appears related to reduced sensitivity of DBS HCV Ab detection with viral clearance following treatment. Since 2016, HCV treatment uptake has increased markedly including among people who inject drugs. In this context, continuing to monitor HCV Ab prevalence by DBS testing is problematic, with a shift to surveillance of active infection the most relevant to guide policy and practice in this setting
“I pity the TB patient”
INTRODUCTION: In Indonesia, a country with around 280 million people and the second-highest tuberculosis (TB) incidence rate in the world, the impact of the COVID-19 pandemic on TB care needs careful assessment so that future response strategies can be strengthened. We conducted a study comparing TB testing and treatment rates before and during the first 2 years of the COVID-19 pandemic in Indonesia, and the reasons for any disruptions to care. M…
The impact of a multi-faceted intervention on non-prescription dispensing of antibiotics by urban community pharmacies in Indonesia
Introduction Non-prescription antibiotic dispensing is prevalent among community pharmacies in several low- and middle-income countries. We evaluated the impact of a multi-faceted intervention to address this challenge in urban community pharmacies in Indonesia. Methods A pre-post quasi-experimental study was carried out in Semarang city from January to August 2022 to evaluate a 7-month long intervention comprising: (1) online educational session…
Access to and utilization of Covid-19 antigen rapid diagnostic tests (Ag-RDTs) among people living with HIV (PLWH)
Several COVID-19 antigen rapid diagnostic tests have been approved in Cambodia, but no evidence exists about the access to and utilization of these tests. This limits public health interventions to increase testing, especially among vulnerable populations such as people living with HIV (PLWH). We conducted a mixed method study among PLWH in Phnom Penh, Cambodia, between July and August 2022 to understand their current Ag-RDT access and utilizatio…
Costs of primary healthcare presentations and hospital admissions for scabies and related skin infections in Fiji, 2018–2019
Scabies and related bacterial skin and soft tissue infections (SSTIs) are highly prevalent in many tropical, low- and middle-income settings. These skin conditions contribute to higher healthcare costs and burdens on healthcare systems. The Big Skin Health Intervention Fiji Trial (“Big SHIFT”) carried out surveillance for scabies and SSTIs from July 2018 to June 2019 in the Northern Division of Fiji, an area with high prevalence of scabies, prior…
The role and value of counsellors in the treatment journeys of people with tuberculosis and their families
Combined education and counselling can contribute to person-centred care for tuberculosis (TB), improving uptake, adherence, and outcomes of treatment for TB disease and TB infection. Though strongly recommended by the World Health Organization for all people diagnosed with TB, education and counselling is not widely implemented in TB programs around the world. In 2016, a pilot TB education and counselling program, delivered by trained profession…
Acute air pollution and temperature exposure as independent and joint triggers of spontaneous preterm birth in New South Wales, Australia
Introduction Exposure to high ambient temperatures and air pollution has been shown to increase the risk of spontaneous preterm birth (sPTB). Less clear are the effects of cold and the joint effects of air pollution and temperature. Methods Using a Cox proportional hazard regression model, we assessed the risk of independent and combined short-term exposure to ambient daily mean temperature and PM 2.5 associated with sPTB in the last week before …
Beyond patient delay, navigating structural health system barriers to timely care and treatment in a high burden TB setting in Papua New Guinea
Tuberculosis (TB) is a major public health issue in Papua New Guinea, with incidence rates particularly high in the South Fly District of Western Province. We present three case studies, along with additional vignettes, that were derived from interviews and focus groups carried out between July 2019 and July 2020 of people living in rural areas of the remote South Fly District depicting their challenges accessing timely TB diagnosis and care; mos…
Towards the elimination of cervical cancer in low-income and lower-middle-income countries
INTRODUCTION: WHO has launched updated cervical screening guidelines, including provisions for primary HPV screen-and-treat. Papua New Guinea (PNG) has a high burden of cervical cancer, but no national cervical screening programme. We recently completed the first field trials of a screen-and-treat algorithm using point-of-care self-collected HPV and same-day treatment (hereafter self-collected HPV S&T) and showed this had superior clinical perfor…
Uncertainty and agency in Covid-19 hotel quarantine in Australia
Mandatory 14-day hotel COVID-19 quarantine was introduced for international arrivals into Australia in late March 2020, with no precedent and little time to prepare. This public health initiative was a key factor in Australia's relatively low COVID-19 burden in the first 18 months of the pandemic. We conducted an empirical bioethics study exploring the experience of people who had quarantined in hotels in Australia. We used in depth interviews to…
HIV self-testing for men who have sex with men
We investigated oral fluid testing (OFT) among men who have sex with men (MSM) to increase HIV testing in Bali, Indonesia. We distributed OFT in January–December 2018 to 813 MSM in Bali. Supervised testing was offered first, and unsupervised was only offered to an individual who declined supervised testing. Included participants were MSM who did not have a HIV test result in the last 6 months and declined referral to facility-based testing. Of 81…
The Association between Diabetes and Human T-Cell Leukaemia Virus Type-1 (HTLV-1) with Strongyloides stercoralis
In central Australia, an area that is endemic for the human T-cell leukaemia virus type-1 (HTLV-1), the prevalence of Strongyloides stercoralis and its association with other health conditions are unknown. A cross-sectional community-based survey was conducted in seven remote Aboriginal communities in central Australia, from 2014 to 2018. All residents aged ≥10 years were invited to complete a health survey and to provide blood for Strongyloides …
Experiences of risk in Australian hotel quarantine
There are systemic issues with infection control in hotel quarantine, which can be further undermined by individual non-compliance. Risks to safety for those in quarantine can be reduced, both in terms of infection control within hotel quarantine and, in the case of the Northern Territory facility, timely in-person medical care as needed for non-COVID conditions. Systems of infection control need ongoing review to ensure that people entering quar…
Measuring school level attributable risk to support school-based HPV vaccination programs
This analysis suggests that initiatives to support schools that are smaller, with a higher proportion of Indigenous adolescents and lower attendance rates may contribute most to reducing the variation of HPV vaccination uptake observed at a school-level in these jurisdictions. Estimating population-level coverage at the school-level is useful to guide policy and prioritise resourcing to support school-based vaccination programs
Belonging, social connection and non‐clinical care
Effective HIV treatments have transformed the medical needs of people living with HIV (PLHIV) to a chronic condition. However, stigma, poorer mental health outcomes and social isolation remain significant challenges for many PLHIV. HIV peer support programs have assisted PLHIV in navigating the clinical, emotional and social aspects of living with HIV. We draw on semi-structured interviews with 26 recently diagnosed PLHIV in Australia to explore …
Exploring Tuberculosis Riskscapes in a Papua New Guinean 'Hotspot
This article explores socio-spatial dimensions of risk and how they can enhance understanding of a high burden tuberculosis (TB) context in the South Fly District of Papua New Guinea. We report on select findings from a qualitative study that included 128 semi-structured in-depth interviews and 10 focus group discussions with a wide range of South Fly District community members. Using the conceptual framework of 'riskscapes' to examine emic persp…
Prevalence and determinants of inappropriate antibiotic dispensing at private drug retail outlets in urban and rural areas of Indonesia
INTRODUCTION: The aim of this mixed-method study was to determine the extent and determinants of inappropriate dispensing of antibiotics by licensed private drug retail outlets in Indonesia. METHODS: Standardised patients (SPs) made a total of 495 visits to 166 drug outlets (community pharmacies and drug stores) between July and August 2019. The SPs presented three clinical cases to drug outlet staff: parent of a child at home with diarrhoea; an …
Working with Aboriginal young people in sexual health research
In a context of ongoing colonization and dispossession in Australia, many Aboriginal people live with experiences of health research that is done “on” rather than “with” or “by” them. Recognizing the agency of young people and contributing to Aboriginal self-determination and community control of research, we used a peer research methodology involving Aboriginal young people as researchers, advisors, and participants in a qualitative sexual healt…
A socio-ecological analysis of factors influencing HIV treatment initiation and adherence among key populations in Papua New Guinea
Exploring health promotion messages that highlight the positive health impacts of early treatment initiation and adherence; providing client-friendly services and community-based treatment initiation and supply; and rolling out HIV viral load testing across the country could improve health outcomes for these key populations
Sustaining success
HIVST increases the frequency of HIV testing among gay and bisexual men due, in part, to the practical, psychological, and social benefits it offers. To capitalize fully on these benefits, however, strategies to ensure the availability of highly reliable HIVST are required to sustain benefits beyond the confines of a structured research study
Estimation of scabies prevalence using simplified criteria and mapping procedures in three Pacific and southeast Asian countries
The scabies prevalence estimation using simplified criteria was similar to using the 2020 IACS criteria in high prevalence, tropical countries. The prevalence estimation was lower in the school-based survey in Timor-Leste. Mapping using simplified criteria may be a feasible and effective public health tool to identify priority regions for scabies control. Further work assessing use of simplified criteria for mapping in a field setting should be c…
The Association between the Australian Alcopops Tax and National Chlamydia Rates among Young People—an Interrupted Time Series Analysis
A national tax increase, which became known as the "alcopops tax", was introduced in Australia on the 27th April 2008 on ready-to-drink alcoholic beverages, which are consumed predominantly by young people. The affordability of alcohol has been identified as the strongest environmental driver of alcohol consumption, and alcohol consumption is a well-known risk factor in the spread of sexually transmitted infections via its association with sexual…
Young Aboriginal people’s engagement with STI testing in the Northern Territory, Australia
This is the first socio-ecological analysis of factors influencing young Aboriginal people's willingness to undertake testing for STIs within clinics in Australia. Strategies to improve uptake of STI testing must tackle the overlapping social and health service factors that discourage young people from seeking sexual health support. Much can be learned from young people's lived sexual health experiences and family- and community-based health prom…
Uptake and acceptability of assisted and unassisted HIV self-testing among men who purchase sex in brothels in Indonesia
This study is the first to investigate the acceptance of HIV self-testing when offered to MWPS in brothels by lay health providers. The high uptake of HIV self-testing suggests that this testing model is acceptable and could increase the very low HIV testing coverage among MWPS. The strong preference for fully assisted HIV self-testing highlights the importance of involving lay health providers in future testing programs. When scaling up HIV self…
Epidemiology of hepatitis C virus infection among injecting drug users in Australia
STUDY OBJECTIVE: To review the epidemiology of hepatitis C virus (HCV) infection among injecting drug users (IDUs) in Australia, and consider needs for further research and prevention policies and programmes. DESIGN: (1) Review of the results of surveillance for HCV; (2) review of published literature on prevalence, incidence, and risk factors for HCV among IDUs; and (3) reconstruction of incidence rates from prevalence studies of HCV in IDUs. SE…
Belonging, social connection and non‐clinical care
Effective HIV treatments have transformed the medical needs of people living with HIV (PLHIV) to a chronic condition. However, stigma, poorer mental health outcomes and social isolation remain significant challenges for many PLHIV. HIV peer support programs have assisted PLHIV in navigating the clinical, emotional and social aspects of living with HIV. We draw on semi-structured interviews with 26 recently diagnosed PLHIV in Australia to explore …
A national surveillance system for newly acquired HIV infection in Australia. National HIV Surveillance Committee
OBJECTIVES. The purpose of this study was to describe the establishment of a national surveillance system for newly acquired human immunodeficiency virus (HIV) infection and present the first 3 years' results. METHODS. All new cases of diagnosed HIV infection were reported to the national HIV surveillance center through state and territory health authorities. Information sought on each case included evidence of whether the infection had been newl…
Exploring Tuberculosis Riskscapes in a Papua New Guinean 'Hotspot
This article explores socio-spatial dimensions of risk and how they can enhance understanding of a high burden tuberculosis (TB) context in the South Fly District of Papua New Guinea. We report on select findings from a qualitative study that included 128 semi-structured in-depth interviews and 10 focus group discussions with a wide range of South Fly District community members. Using the conceptual framework of 'riskscapes' to examine emic persp…
The Effect of Hepatitis C Virus Infection on Health-Related Quality of Life in Prisoners
Increasing HIV treatment access, uptake and use among men who have sex with men in urban Indonesia
Men who have sex with men make up one of four key populations identified as critical to a successful HIV response in Indonesia. Despite international policies supporting HIV treatment in low- and middle-income countries, Indonesia is one of the few countries experiencing low coverage of HIV treatment and little decrease in HIV incidence. There is poor retention in care and low viral suppression rates among key populations such as men who have sex…
Youth-centred research to help prevent and mitigate the adverse health and social impacts of pregnancy amongst young Papua New Guineans
Building social currency with foreskin cuts
BACKGROUND: Recent research as part of a multi-disciplinary investigation on the acceptability and impact of male circumcision for HIV prevention in Papua New Guinea (PNG) has shown that health workers (HWs) undertake unauthorized forms of penile cutting practices in public health facilities or in community settings, at times within a traditional context. Participation in these activities shares common features with coping mechanisms, strategies …
Why Women Object to Male Circumcision to Prevent HIV in a Moderate-Prevalence Setting
Adult male circumcision has been shown to reduce the transmission of HIV. Women's acceptability of male circumcision is important in Papua New Guinea's preparedness to introduce male circumcision, and in ethical considerations of its use as a biomedical technology for HIV prevention. We conducted 21 focus group discussions and 18 in-depth interviews with women in all four regions of Papua New Guinea. The majority of women objected to the introduc…
Hepatitis C Virus Acquisition among Injecting Drug Users
Empirical Bayes Estimates of Age-Standardized Relative Risks for Use in Disease Mapping
There have been many attempts in recent years to map incidence and mortality from diseases such as cancer. Such maps usually display either relative rates in each district, as measured by a standardized mortality ratio (SMR) or some similar index, or the statistical significance level for a test of the difference between the rates in that district and elsewhere. Neither of these approaches is fully satisfactory and we propose a new approach using…
A national surveillance system for newly acquired HIV infection in Australia. National HIV Surveillance Committee
OBJECTIVES. The purpose of this study was to describe the establishment of a national surveillance system for newly acquired human immunodeficiency virus (HIV) infection and present the first 3 years' results. METHODS. All new cases of diagnosed HIV infection were reported to the national HIV surveillance center through state and territory health authorities. Information sought on each case included evidence of whether the infection had been newl…
A method for estimating baseline health care costs
STUDY OBJECTIVES--Studies estimating the cost of specific illnesses do not generally take into account the fact that health care costs would have been incurred in the absence of the disease of interest. The goal of this study was to develop a method of estimating age specific baseline health care costs. These costs were calculated for Australian men, and their magnitude was compared with the costs of caring for men with HIV infection. DESIGN--Inf…
Effectiveness of needle-exchange programmes for prevention of HIV infection
Epidemiology of hepatitis C virus infection among injecting drug users in Australia
STUDY OBJECTIVE: To review the epidemiology of hepatitis C virus (HCV) infection among injecting drug users (IDUs) in Australia, and consider needs for further research and prevention policies and programmes. DESIGN: (1) Review of the results of surveillance for HCV; (2) review of published literature on prevalence, incidence, and risk factors for HCV among IDUs; and (3) reconstruction of incidence rates from prevalence studies of HCV in IDUs. SE…
HIV-1 Infection among Female Commercial Sex Workers in Rural Thailand
A retrospective study of 821 commercial sex workers attending a sexually transmitted disease (STD) clinic in northern Thailands Chiang Rai Province from 1989 to 1993 revealed an explosive epidemic of human immunodeficiency virus (HIV). The overall seroprevalence among the 556 women for whom antibody tests were available was 52.3%. However a dramatic increase in HIV-1 seroprevalence occurred from 1989 (29.3%) to 1990 (54.1%) followed by a leveling…
Queer theory, politics and HIV/Aids
Cultures of sexual adventurism as markers of HIV seroconversion
A case control analysis within an ongoing cohort study was used to examine differences between seroconverters and men who remained HIV-negative. The cases were interviewed within one to 13 months prior to their seroconversion. Their responses to a structured questionnaire were compared with those of HIV-negative controls drawn from the same time period and from the same longitudinal study, Sydney Men and Sexual Health. Data collected from both ca…
Seroconversion in context
This paper describes the accounts that homosexually active men give of their HIV seroconversion and interrogates these accounts for risk discourses. In particular, this paper asks whether the risk discourses of HIV researchers and educators are present in the men's narratives of their own seroconversion. Such discourses make reference to 'unsafe' sex--particularly the practice of unprotected anal intercourse, numbers of sexual partners or 'promis…
Drug Use and Its Correlates in an Australian Prisoner Population
The prevalence of past and present tobacco, alcohol, and illicit drug use is examined in a cross sectional random sample of prisoners. 789 male and female prisoners from 27 correctional centres across New South Wales (NSW) participated in the survey. Information was collected using a face-to-face interview on community and prison drug use, and intoxication while offending. Current tobacco use was reported by 72% of the sample. Use of alcohol by f…
Obituary-Margaret MacDonald 1956–2003
Effectiveness of needle and syringe programmes for preventing HIV transmission
Contexts for last occasions of unprotected anal intercourse among HIV-negative gay men in Sydney
The objective of the paper was to compare encounters involving unprotected anal intercourse (UAI) and protected anal intercourse (PAI) among HIV-negative gay men in Sydney. Data were from those completing baseline face-to-face interviews to end June 2003 for the Health in Men open cohort of HIV-negative gay men in Sydney. The 1,148 participants ranged in age from 18 to 75 years (median = 36). Three hundred and fifty-two (30.7%) reported an occasi…
Public opinion towards supervised injecting centres and the Sydney Medically Supervised Injecting Centre
HIV risk and communication between regular partners in a cohort of HIV-negative gay men
This paper reports on the breaking of agreements between regular partners among HIV-negative gay men in Sydney. Data were from the 1333 men completing face-to-face interviews through December 2003 for the Health in Men (HIM) open cohort of HIV-negative gay men in Sydney.822 men had a primary regular partner during the six month period before their 2003 interview. Most of these men had entered into agreements with their partners about sex either w…
Differences between men who report frequent, occasional or no unprotected anal intercourse with casual partners among a cohort of HIV-seronegative gay men in Sydney, Australia
Past research on unprotected anal intercourse with casual partners (UAIC) contrasts those who report no UAIC with any UAIC. This paper examines differences among three groups of men who had any UAIC on the basis of the number of UAIC acts reported in a six-month period, namely no UAIC (n = 507), occasional UAIC (1-5 acts, n = 251) and frequent UAIC (more than 5 acts, n = 148). The occasional UAIC group had values lying between those of the no- an…
Number of Risk Acts by Relationship Status and Partner Serostatus
The Effect of Hepatitis C Virus Infection on Health-Related Quality of Life in Prisoners
Sex work and risk behaviour among HIV-negative gay men
Gay men who engage in sex work may be at increased risk through risk behaviour outside the context of sex work. Among participants in the Health in Men (HIM) cohort of HIV-seronegative gay men in Sydney, 19.7% had ever engaged in sex work. Five percent reported being paid for sex in a six-month period during the study (2001-2006); a minority (18.3%) of these current sex workers reported unprotected anal intercourse (UAI) with clients and 62.0% re…
Five years on
Recruitment and follow-up of injecting drug users in the setting of early hepatitis C treatment
Trends in Agreements Between Regular Partners Among Gay Men in Sydney, Melbourne and Brisbane, Australia
Hepatitis C Virus Acquisition among Injecting Drug Users
Reemergence of the HIV Epidemic Among Men Who Have Sex With Men in North America, Western Europe, and Australia, 1996–2005
Unprotected anal intercourse, risk reduction behaviours, and subsequent HIV infection in a cohort of homosexual men
OBJECTIVE: A range of risk reduction behaviours in which homosexual men practise unprotected anal intercourse (UAI) has been described. We aimed to assess the extent of any reduction in HIV risk associated with these behaviours. DESIGN: A prospective cohort study of HIV-negative homosexual men in Sydney, Australia. METHODS: Men were followed up with 6-monthly detailed behavioural interviews and annual testing for HIV. The four risk reduction beha…
Medicine (76 obras) · HIV/AIDS Research and Interventions (40 obras) · Environmental health (38 obras) · Demography (37 obras) · Family medicine (37 obras) · HIV, Drug Use, Sexual Risk (34 obras) · Public health (31 obras) · Internal Medicine (30 obras) · Sociology (26 obras) · Nursing (24 obras)