Publications by authors named "Dominic A Travis"

Despite zoonotic potential, data are lacking on enteric infection diversity in wild apes. We employed a novel molecular diagnostic platform to detect enteric infections in wild chimpanzees and gorillas. Prevalent Cryptosporidium parvum, adenovirus, and diarrheagenic Escherichia coli across divergent sites and species demonstrates potential widespread circulation among apes in Africa.

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Fish serve as indicators of exposure to contaminants of emerging concern (CECs)-chemicals such as pharmaceuticals, hormones, and personal care products-which are often designed to impact vertebrates. To investigate fish health and CECs in situ, we evaluated the health of wild fish exposed to CECs in waterbodies across northeastern Minnesota with varying anthropogenic pressures and CEC exposures: waterbodies with no human development along their shorelines, those with development, and those directly receiving treated wastewater effluent. Then, we compared three approaches to evaluate the health of fish exposed to CECs in their natural environment: a refined fish health assessment index, a histopathological index, and high-throughput (ToxCast) in vitro assays.

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Diagnosing the causative agent of febrile illness in resource-limited countries is a challenge in part due to lack of adequate diagnostic infrastructure to confirm cause of infection. Most febrile illnesses (>60%) are non-malarial, with a significant proportion being zoonotic and likely from animal origins. To better characterize the pathways for zoonotic disease transmission and control in vulnerable communities, adequate information on the communities' experiences and lexicon describing fever, and their understanding and perceptions of risk pathways is required.

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  • Critically endangered orangutans are translocated for various reasons, including reintroducing them to areas without wild populations and reinforcing existing ones; however, this process poses disease risks, especially during the COVID-19 pandemic.
  • During the COVID-19 pandemic, experts advised halting orangutan translocations to minimize the risk of transmitting human diseases, but some releases occurred, exposing orangutans to potential human-borne diseases.
  • The study recommends conducting a Disease Risk Analysis, enhancing pathogen surveillance, and exploring conservation strategies other than translocation, such as reducing human-orangutan interactions and protecting natural habitats.
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Increased risk of pathogen transmission through proximity and contact is a well-documented cost of sociality. Affiliative social contact, however, is an integral part of primate group life and can benefit health. Despite its importance to the evolution and maintenance of sociality, the tradeoff between costs and benefits of social contact for group-living primate species remains poorly understood.

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Infectious disease outbreaks pose a significant threat to the conservation of chimpanzees (Pan troglodytes) and all threatened nonhuman primates. Characterizing and mitigating these threats to support the sustainability and welfare of wild populations is of the highest priority. In an attempt to understand and mitigate the risk of disease for the chimpanzees of Gombe National Park, Tanzania, we initiated a long-term health-monitoring program in 2004.

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  • Most studies on antimicrobial-resistant bacteria (ARB) in wildlife focus on livestock, leaving a knowledge gap on the interface between wildlife and companion animals, like dogs.
  • A study in Chicago found that raccoons had a higher prevalence (56.9%) of extended-spectrum cephalosporin-resistant E. coli compared to domestic dogs (16.5%), but their genetic diversity was similar.
  • Raccoons at public parks (accessible to dogs) showed higher isolation rates of ARB compared to those at private parks, suggesting limited overlap in ARB exposure between raccoons and domestic dogs in certain areas.
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Infectious disease is recognized as the greatest threat to the endangered chimpanzees made famous by the groundbreaking work of Dr. Jane Goodall at Gombe National Park (GNP), Tanzania. The permeable boundary of this small protected area allows for regular wildlife-human and wildlife-domestic animal overlap, which may facilitate cross-species transmission of pathogens and antimicrobial resistance.

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The hunting, butchery, and consumption of wild meat is an important interface for zoonotic disease transmission. Despite this, few researchers have used ethnography to understand the sociocultural factors that may increase zoonotic disease transmission from hunting, particularly in Amazonia. Here, we use ethnographic methods consisting of structured, semi-structured and unstructured interviews, and participant observation to address questions pertaining to wild meat consumption, pathways of zoonotic disease transmission, food security, and the cultural identity of indigenous Waiwai in the Konashen Community Owned Conservation Area, Guyana.

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Contaminants of emerging concern (CECs) include a variety of pharmaceuticals, personal care products, and hormones commonly detected in surface waters. Human activities, such as wastewater treatment and discharge, contribute to the distribution of CECs in water, but other sources and pathways are less frequently examined. This study aimed to identify anthropogenic activities and environmental characteristics associated with the presence of CECs, previously determined to be of high priority for further research and mitigation, in rural inland lakes in northeastern Minnesota, United States.

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  • * This study focused on 117 CECs in the Grand Portage Indian Reservation and nearby areas, aiming to evaluate their potential hazards using a specific framework from the Minnesota Pollution Control Agency.
  • * The researchers identified 50 high-priority CECs in water, 21 in sediment, and 7 in fish samples, recommending future monitoring of these contaminants based on their prevalence and risk in the ecosystem.
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  • Livestock movements play a crucial role in the spread of infectious diseases in pastoralist communities, but a lack of data limits effective disease control.
  • The study analyzed animal movement networks among villages in the Maasai Mara Ecosystem in Kenya, revealing that protected areas were key to maintaining village connectivity during the dry season.
  • Findings suggest that targeting specific, highly connected villages for interventions could be more effective in controlling disease transmission than random approaches, emphasizing the importance of network dynamics in disease management.
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  • - The study of chimpanzees in Gombe National Park, initiated by Jane Goodall in 1960, has offered significant insights into chimpanzee behavior, highlighting their struggles with infectious diseases like SIVcpz and habitat loss due to deforestation.
  • - The Jane Goodall Institute has implemented health monitoring programs and participatory village land use planning to mitigate disease risks and promote habitat restoration, benefiting both chimpanzees and local communities.
  • - Ongoing conservation efforts in the Greater Gombe Ecosystem are showing promise for both wildlife and human populations, while also providing a model for similar initiatives across Tanzania and Africa.
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  • Global trade of live animals increases the risk of spreading pathogens, especially through recreational fishing practices like baitfish release in the U.S.
  • A new hazard identification and ranking tool was developed to assess and prioritize pathogens that could harm wild fish populations, focusing on Minnesota as a case study.
  • The study identified Schizocotyle acheilognathi as the highest-risk pathogen, underscoring the need for better management practices to prevent disease spread while supporting the fishing industry.
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Bacillus anthracis, the bacteria that causes anthrax, a disease that primarily affects herbivorous animals, is a soil borne endospore-forming microbe. Environmental distribution of viable spores determines risky landscapes for herbivore exposure and subsequent anthrax outbreaks. Spore survival and longevity depends on suitable conditions in its environment.

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Pharmaceuticals, personal care products, hormones, and other chemicals lacking water quality standards are frequently found in surface water. While evidence is growing that these contaminants of emerging concern (CECs) - those previously unknown, unrecognized, or unregulated - can affect the behavior and reproduction of fish and wildlife, little is known about the distribution of these chemicals in rural, tribal areas. Therefore, we surveyed the presence of CECs in water, sediment, and subsistence fish species across various waterbodies, categorized as undeveloped (i.

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The role of wildlife in the dissemination of antimicrobial-resistant bacteria and antimicrobial resistance genes (ARGs) in the environment is of increasing concern. We investigated the occurrence, richness and transmissibility potential of ARGs detected in the faeces of three mesocarnivore species: the coyote (Canis latrans), raccoon (Procyon lotor) and Virginia opossum (Didelphis virginiana), and of stray and owned dogs in suburban Chicago, IL, USA. Rectal swabs were collected from live-captured coyotes (n = 32), raccoons (n = 31) and Virginia opossums (n = 22).

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Background: Point sources such as wastewater treatment plants (WWTPs) commonly discharge their effluent into rivers. Their waste may include antibiotic residues, disinfectants, antibiotic resistant bacteria (ARB), and Antimicrobial Resistance Genes (ARG). There is evidence that ARG can be found in the natural environment, but attribution to specific point sources is lacking.

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1. Syndromic surveillance is an incipient approach to early wildlife disease detection. Consequently, systematic assessments are needed for methodology validation in wildlife populations.

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Article Synopsis
  • - The study focused on a respiratory disease surveillance system in Gombe National Park, Tanzania, from 2004 to 2012, highlighting the importance of evaluating the performance of disease detection systems in wildlife.
  • - Data quality was analyzed based on community coverage and consistency, revealing that respiratory disease events were rare, with an average of less than one case per week and no clear seasonal or long-term trends.
  • - The research developed algorithms for detecting disease outbreaks using historical data, suggesting that applying these algorithms in real-time could improve responses to potential respiratory disease outbreaks through targeted actions.
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Background: Anthrax is a zoonotic disease primarily of herbivores, caused by Bacillus anthracis, a bacterium with diverse geographical and global distribution. Globally, livestock outbreaks have declined but in Africa significant outbreaks continue to occur with most countries still categorized as enzootic, hyper endemic or sporadic. Uganda experiences sporadic human and livestock cases.

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