47 research outputs found

    A One Health investigation of Salmonella enterica serovar Wangata in north-eastern New South Wales, Australia, 2016-2017

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    Salmonella enterica serovar Wangata (S. Wangata) is an important cause of endemic salmonellosis in Australia, with human infections occurring from undefined sources. This investigation sought to examine possible environmental and zoonotic sources for human infections with S. Wangata in north-eastern New South Wales (NSW), Australia. The investigation adopted a One Health approach and was comprised of three complimentary components: a case–control study examining human risk factors; environmental and animal sampling; and genomic analysis of human, animal and environmental isolates. Forty-eight human S. Wangata cases were interviewed during a 6-month period from November 2016 to April 2017, together with 55 Salmonella Typhimurium (S. Typhimurium) controls and 130 neighbourhood controls. Indirect contact with bats/flying foxes (S. Typhimurium controls (adjusted odds ratio (aOR) 2.63, 95% confidence interval (CI) 1.06–6.48)) (neighbourhood controls (aOR 8.33, 95% CI 2.58–26.83)), wild frogs (aOR 3.65, 95% CI 1.32–10.07) and wild birds (aOR 6.93, 95% CI 2.29–21.00) were statistically associated with illness in multivariable analyses. S. Wangata was detected in dog faeces, wildlife scats and a compost specimen collected from the outdoor environments of cases’ residences. In addition, S. Wangata was detected in the faeces of wild birds and sea turtles in the investigation area. Genomic analysis revealed that S. Wangata isolates were relatively clonal. Our findings suggest that S. Wangata is present in the environment and may have a reservoir in wildlife populations in north-eastern NSW. Further investigation is required to better understand the occurrence of Salmonella in wildlife groups and to identify possible transmission pathways for human infections.Whole genome sequencing for this project was supported by the NSW Public Health Pathogen Genomics Consortium, CIDM-PH, NSW Health

    A One Health investigation of Salmonella enterica serovar Wangata in north-eastern New South Wales, Australia, 2016-2017.

    Get PDF
    Salmonella enterica serovar Wangata (S. Wangata) is an important cause of endemic salmonellosis in Australia, with human infections occurring from undefined sources. This investigation sought to examine possible environmental and zoonotic sources for human infections with S. Wangata in north-eastern New South Wales (NSW), Australia. The investigation adopted a One Health approach and was comprised of three complimentary components: a case-control study examining human risk factors; environmental and animal sampling; and genomic analysis of human, animal and environmental isolates. Forty-eight human S. Wangata cases were interviewed during a 6-month period from November 2016 to April 2017, together with 55 Salmonella Typhimurium (S. Typhimurium) controls and 130 neighbourhood controls. Indirect contact with bats/flying foxes (S. Typhimurium controls (adjusted odds ratio (aOR) 2.63, 95% confidence interval (CI) 1.06-6.48)) (neighbourhood controls (aOR 8.33, 95% CI 2.58-26.83)), wild frogs (aOR 3.65, 95% CI 1.32-10.07) and wild birds (aOR 6.93, 95% CI 2.29-21.00) were statistically associated with illness in multivariable analyses. S. Wangata was detected in dog faeces, wildlife scats and a compost specimen collected from the outdoor environments of cases' residences. In addition, S. Wangata was detected in the faeces of wild birds and sea turtles in the investigation area. Genomic analysis revealed that S. Wangata isolates were relatively clonal. Our findings suggest that S. Wangata is present in the environment and may have a reservoir in wildlife populations in north-eastern NSW. Further investigation is required to better understand the occurrence of Salmonella in wildlife groups and to identify possible transmission pathways for human infections

    International law and the procedural regulation of internment in non-international armed conflict

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    'International humanitarian law' (IHL) has long differentiated between international and non-international armed conflicts, regulating the latter, at least at the level of treaty law, far less than the former. One of the starkest examples of this is in the case of administrative detention on security grounds or 'internment'. Thus, IHL applicable in international armed conflicts establishes a seemingly robust regime regarding internment. As such, it specifies the limited grounds on which an individual may be interned, the procedural safeguards that must be provided to internees, and the point at which the internee must be released. In the conventional IHL provisions applicable in non-international armed conflicts, on the other hand, no equivalent rules are made explicit. In addition, the application in such situations of international human rights law (IHRL), which also contains procedural rules applicable to detention, is considered by many to be very controversial. This has led to considerable confusion over the current state of the law governing detention in non-international armed conflict, and it is here that some of the most controversial practices and intractable debates within IHL of the last decade have developed. The present thesis seeks to clarify the law here and does so through a comprehensive examination of both IHL and IHRL. It begins with a discussion of the general context in which the thesis falls, i.e. the distinction between international and non-international armed conflicts. This is considered from an historical perspective, considering the basis for the distinction as well as its appropriateness in contemporary international law. Having considered this general question, the thesis then moves on to an examination of the current lex lata with regard to internment in non-international armed conflicts, with a comprehensive examination of both IHL and IHRL. Regarding IHL, it is shown that, whilst there remains a dearth of conventional and customary rules here, one can discern a general prohibition of internment that is not necessary as a result of the conflict. The application of the IHRL rules on detention in non-international conflicts and their interaction with relevant rules of IHL are then explored, with substantial reference to the practice of both states and human rights treaty bodies. It is shown that, absent derogation, human rights treaty rules continue fully to regulate detentions by states in relation to non-international armed conflicts, alongside the minimal rules of IHL. However, it is also demonstrated that the current law remains inadequate in this area. First, there is significant disagreement between the human rights treaty bodies on the extent to which derogation from these rules is permitted. Second, persons detained in non-international conflicts by non-state armed groups or by states with no human rights treaty obligations are protected by the far more basic customary rules in this area. The thesis, therefore, concludes with a set of concrete proposals for developing the law here, in a manner that builds upon and clarifies the current obligations of all states and non-state armed groups
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