Community-led diphtheria vaccination campaign to manage a diphtheria outbreak in a remote Aboriginal community.

In 2022, five cases of diphtheria were identified in and around Wujal Wujal, a discrete Aboriginal community in Far North Queensland. This prompted a mass diphtheria vaccination campaign in the community which increased the proportion of residents aged ≥ 14 years receiving a diphtheria containing vaccine in the prior twelve months from 5% to 74%. No further cases were detected in the subsequent twenty-two months.

Age of hepatitis B e antigen loss in Aboriginal, Torres Strait Islander and non-Indigenous residents of tropical Australia; implications for clinical care.

This study determined the hepatitis B e antigen (HBeAg) status of people living with chronic hepatitis B (CHB) in Far North Queensland (FNQ), Australia and their age of HBeAg loss. It was hoped that this would provide data to explain the stark difference in the incidence of hepatocellular carcinoma (HCC) between Aboriginal and Torres Strait Islander individuals living with CHB in FNQ, a finding that has been hypothesised to relate to differences in hepatitis B virus genotype. We identified every FNQ resident with CHB, determined their country of birth, their HBeAg status, the age they lost HBeAg and whether they identified as an Aboriginal, a Torres Strait Islander or a non-Indigenous individual.

Significant healthcare resource utilisation in the management of skin and soft tissue infections in the Torres Strait, Australia.

Introduction: Aboriginal and Torres Strait Islander Peoples (First Nations Australians) living in remote communities are hospitalised with skin and soft tissue infections (SSTIs) at three times the rate of non-First Nations Australians. The Torres Strait in tropical northern Australia has a highly dispersed population mainly comprising First Nations Australians. This study aimed to define the health service utilisation and health system costs associated with SSTIs in the Torres Strait and to improve the quality of regional healthcare delivery.

A mixed-methods evaluation: COVID Care in the Home, a public health response to the first omicron wave across the Torres and Cape region, Queensland.

Objective: The purpose of this article is to evaluate the COVID-19 Care in the Home (CCITH) program during the first COVID-19 omicron wave across Torres Strait and Cape York region of Far North Queensland in 2022.

Methods: A mixed-method study: An online survey and semi-structured interviews of CCITH internal and external stakeholders and participants was utilised to develop a greater understanding of perspectives of the program.

Results: Survey participants n=140.

Host gene expression signatures to identify infection type and organ dysfunction in children evaluated for sepsis: a multicentre cohort study.

Background: Sepsis is defined as dysregulated host response to infection that leads to life-threatening organ dysfunction. Biomarkers characterising the dysregulated host response in sepsis are lacking. We aimed to develop host gene expression signatures to predict organ dysfunction in children with bacterial or viral infection.

A low burden of severe illness: the COVID-19 Omicron outbreak in the remote Torres and Cape region of Far North Queensland.

A coronavirus disease 2019 (COVID-19) outbreak was declared in the remote Torres and Cape region of Far North Queensland soon after the Queensland border opened for quarantine-free domestic travel in December 2021, with a total of 7,784 cases notified during the first ten-month outbreak period. We report a crude attack rate among residents of 25.6% (95% confidence interval [95% CI]: 25.

Hepatitis B genotypes in Aboriginal and Torres Strait Islander Australians: correlation with clinical course and implications for management.

Background: The prevalence of chronic hepatitis B (CHB) in Aboriginal and Torres Strait Islander Australians in Far North Queensland (FNQ) is greater than twice that of the general Australian population. CHB is common in Torres Strait Islanders diagnosed with hepatocellular carcinoma (HCC) - and in Aboriginals with HCC living in the Northern Territory - however, Aboriginals diagnosed with HCC in FNQ very rarely have CHB. The explanation for this apparent disparity is uncertain.

Genomic analysis of an outbreak of toxin gene bearing in Northern Queensland, Australia reveals high level of genetic similarity.

Toxigenic diphtheria is rare in Australia with generally fewer than 10 cases reported annually; however, since 2020, there has been an increase in toxin gene-bearing isolates of cases in North Queensland, with an approximately 300% escalation in cases in 2022. Genomic analysis on both toxin gene-bearing and non-toxin gene-bearing isolated from this region between 2017 and 2022 demonstrated that the surge in cases was largely due to one sequence type (ST), ST381, all of which carried the toxin gene. ST381 isolates collected between 2020 and 2022 were highly genetically related to each other, and less closely related to ST381 isolates collected prior to 2020.

The high burden of comorbidities in Aboriginal and Torres Strait Islander Australians living with chronic hepatitis B in Far North Queensland, Australia, and the implications for patient management.

Background: Aboriginal and Torres Strait Islander Australians living with chronic hepatitis B virus (HBV) infection have a significant burden of hepatocellular carcinoma (HCC). The prevalence of comorbidities that increase the risk of HCC in this population is incompletely defined.

Methods: This cross-sectional study was performed in remote tropical Queensland, Australia in January 2021.

Community antibiotic management of skin infections in the Torres Strait.

Background: There is a high burden of skin and soft tissue infections (SSTI) - including cellulitis - among Aboriginal and Torres Strait Islander peoples living in remote communities. In tropical environments, such as the Torres Strait, cellulitis accounts for 37% of potentially preventable hospitalisations. This study aimed to evaluate the safety, effectiveness and community acceptance of outpatient antibiotic treatment for the management of skin infections in the Torres Strait.

Seeking to improve access to COVID-19 therapeutics in the remote Torres and Cape communities of Far North Queensland during the first COVID-19 omicron outbreak.

Introduction: The first outbreak of the omicron variant of COVID-19 in the Torres and Cape region of Far North Queensland in Australia was declared in late December 2021. A COVID-19 Care at Home program was created to support the health and non-health needs of people with COVID-19 and their families throughout the mandatory isolation periods and included centralising the coordination and delivery of COVID-19 therapeutics. The therapeutics available included one intravenous monoclonal antibody (sotrovimab) and two oral antiviral therapies: nirmatrelvir and ritonavir (Paxlovid®) and molnupiravir (Lagevrio®).

Healthy Skin, Healthy Mepla: A skin health promotional event for children in the Torres Strait.

Issue Addressed: Skin infections such as impetigo and scabies are common in Aboriginal Australian and Torres Strait Islander children living in rural and remote settings. Effective health promotion is a key element when addressing health literacy aimed at reducing the burden of skin disease. Community-driven health promotion provides a potentially effective and sustainable model for improved health outcomes.

Echocardiographic Screening Detects a Significant Burden of Rheumatic Heart Disease in Australian Torres Strait Islander Children and Missed Opportunities for its Prevention.

Rheumatic heart disease (RHD) is almost entirely preventable, but its incidence in indigenous Australians remains one of the highest in the world. A community-based echocardiogram screening program of 862 Torres Strait Islander children identified 25 (2.9%) new cases of RHD.

Chronic hepatitis B in remote, tropical Australia; successes and challenges.

Introduction: Aboriginal and Torres Strait Islander Australians living in remote locations suffer disproportionately from chronic hepatitis B (CHB). Defining the temporospatial epidemiology of the disease-and assessing the ability of local clinicians to deliver optimal care-is crucial to improving patient outcomes in these settings.

Methods: The demographic, laboratory and radiology findings in all patients diagnosed with CHB after 1990, and presently residing in remote Far North Queensland (FNQ), tropical Australia, were correlated with their management and clinical course.

Melioidosis in the Torres Strait Islands, Australia: Exquisite Interplay between Pathogen, Host, and Environment.

, a bacterium that lives in the soil of the tropics, causes the disease melioidosis. This retrospective study investigated the temporospatial epidemiology of the 49 laboratory-confirmed melioidosis cases in the Torres Straits Islands of tropical Australia between 1997 and 2017. An identifiable risk factor for the disease was present in 43/49 (88%) cases and in 35/36 (97%) cases with complete clinical data.

Impact of HLA-driven HIV adaptation on virulence in populations of high HIV seroprevalence.

It is widely believed that epidemics in new hosts diminish in virulence over time, with natural selection favoring pathogens that cause minimal disease. However, a tradeoff frequently exists between high virulence shortening host survival on the one hand but allowing faster transmission on the other. This is the case in HIV infection, where high viral loads increase transmission risk per coital act but reduce host longevity.

Pyocyanin inhibits both nitric oxide-dependent and -independent relaxation in porcine coronary arteries.

The effects of the Pseudomonas aeruginosa virulence factor pyocyanin (PCN) on the contractile function of porcine coronary arteries was investigated in vitro. Artery rings (5 mm) were suspended in organ baths containing Krebs' solution for the measurement of isometric tension. The effect of PCN on resting and precontracted coronary arteries was initially investigated with various agents.

Evaluation of the NucliSens EasyQ v2.0 assay in comparison with the Roche Amplicor v1.5 and the Roche CAP/CTM HIV-1 Test v2.0 in quantification of C-clade HIV-1 in plasma.

Human immunodeficiency virus type 1 (HIV-1) genetic diversity poses a challenge to reliable viral load monitoring. Discrepancies between different testing platforms have been observed, especially for non-clade-B virus. Therefore we compare, in antiretroviral therapy (ART)-naïve South African subjects predominantly infected with HIV-1 clade-C, three commercially available assays: the COBAS AmpliPrep/COBAS TaqMan HIV-1 Test version 2.