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Bersacola E, Parathian H, Frazão-Moreira A, Jaló M, Sanhá A, Regalla A, Saíd AR, Quecuta Q, Camará ST, Quade SMFF, Jaquite SM, Lopes AG, Patrono LV, Ramon M, Bessa J, Godley BJ, Bonneaud C, Leendertz FH, Hockings KJ. Developing an Evidence-Based Coexistence Strategy to Promote Human and Wildlife Health in a Biodiverse Agroforest Landscape. FRONTIERS IN CONSERVATION SCIENCE 2021. [DOI: 10.3389/fcosc.2021.735367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Agroforest mosaics represent one of the most extensive human-impacted terrestrial systems worldwide and play an increasingly critical role in wildlife conservation. In such dynamic shared landscapes, coexistence can be compromised if people view wildlife as a source of infectious disease. A cross-disciplinary One Health knowledge base can help to identify evolving proponents and threats to sustainable coexistence and establish long-term project goals. Building on an existing knowledge base of human–wildlife interactions at Cantanhez National Park (NP), Guinea-Bissau, we developed a causal pathway Theory-of-Change approach in response to a newly identified disease threat of leprosy in the Critically Endangered western chimpanzee (Pan troglodytes verus). The goals of our project are to improve knowledge and surveillance of leprosy in humans and wildlife and increase capacity to manage human–wildlife interactions. We describe the core project activities that aim to (1) quantify space use by chimpanzees across Cantanhez NP and determine the distribution of leprosy in chimpanzees; (2) understand the health system and local perceptions of disease; and (3) identify fine-scale risk sites through participatory mapping of resources shared by humans and chimpanzees across target villages. We discuss the development of a biodiversity and health monitoring programme, an evidence-based One Health campaign, and a One Health environmental management plan that incorporates the sharing of space and resources, and the disease implications of human–non-human great ape interactions. We demonstrate the importance of multi-stakeholder engagement, and the development of strategy that fully considers interactions between people, wildlife, and the environment.
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McCormick CD, Lea J, Stryjewska BM, Thompson A, Fairley JK. Trends of leprosy and multibacillary infection in the state of Georgia since the early 1900s. PLoS Negl Trop Dis 2019; 13:e0007713. [PMID: 31603913 PMCID: PMC6808490 DOI: 10.1371/journal.pntd.0007713] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 10/23/2019] [Accepted: 08/15/2019] [Indexed: 11/18/2022] Open
Abstract
Few investigations to date have analyzed the epidemiology of Hansen’s disease (leprosy) in the United States, and in particular, if birth location is related to multibacillary versus paucibacillary leprosy. We collected data on 123 patients diagnosed with leprosy in Georgia from the National Hansen’s Disease Program from 1923—January 2018. A logistic regression model was built to examine the relationship between country of origin (U.S.-born or immigrant) and the type of leprosy. While the model showed no significant relationship between country of origin and type of leprosy, being Asian or Pacific Islander was associated with a higher odds of multibacillary disease (aOR = 5.71; 95% CI: 1.25–26.29). Furthermore, since the early 1900s, we found an increasing trend of leprosy reports in Georgia among both domestic born and immigrant residents, despite the overall decrease in cases in the United States during the same time period. More research is therefore necessary to further evaluate risk for multibacillary leprosy in certain populations and to create targeted interventions and prevention strategies. Leprosy is often believed to not be an issue in many countries. However, the disease is still very much a problem globally, and in the past several decades has been on the rise in the United States. Frequently the disease is misdiagnosed several times before appropriately treated. Although newly diagnosed cases in the United States only remain around 160 every year, there is limited investigation of leprosy in the United States. As the concern over transmission from armadillos continues to rise, coupled with the increase in connectedness of the global population, it is important to be able to identify populations at higher risk for the more infectious form of leprosy, multibacillary leprosy, for targeted interventions. The researchers sought to investigate which populations are at higher risk for this more infectious form, while also describing the history of cases in the state of Georgia. By adding to the body of literature on leprosy in the United States, it is the hope that more research will be produced that provides a better understanding of the disease trends within the country, while also enabling more targeted interventions.
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Affiliation(s)
- Carter D. McCormick
- Hubert Department of Global Health, Emory University Rollins School of Public Health Atlanta, GA, United States of America
- * E-mail:
| | - Jacqueline Lea
- National Hansen’s Disease Programs, Baton Rouge, LA, United States of America
| | | | - Ashton Thompson
- Georgia Department of Public Health, Atlanta, GA, United States of America
| | - Jessica K. Fairley
- Hubert Department of Global Health, Emory University Rollins School of Public Health Atlanta, GA, United States of America
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Oliveira IVPDM, Deps PD, Antunes JMADP. Armadillos and leprosy: from infection to biological model. Rev Inst Med Trop Sao Paulo 2019; 61:e44. [PMID: 31531622 PMCID: PMC6746198 DOI: 10.1590/s1678-9946201961044] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 08/05/2019] [Indexed: 11/22/2022] Open
Abstract
Mycobacterium leprae is the primary causative agent of Hansen’s disease or leprosy. Besides human beings, natural infection has been described in animals such as mangabey monkeys and armadillos. Leprosy is considered a global health problem and its complete pathogenesis is still unknown. As M. leprae does not grow in artificial media, armadillos have become the primary experimental model for leprosy, mimicking human disease including involvement of the peripheral nervous system. Leprosy transmission occurs through continuous and close contact of susceptible people with untreated infected people. However, unknown leprosy contact has been reported in leprosy-affected people, and contact with armadillos is a risk factor for leprosy. In the USA, leprosy is considered a zoonosis and this classification has recently been accepted in Brazil. This review presents information regarding the role of wild armadillos as a source of M. leprae for human infections, as well as the pathogenesis of leprosy.
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Affiliation(s)
| | - Patrícia Duarte Deps
- Universidade Federal do Espírito Santo, Departamento de Medicina Social, Vitória, Espírito Santo, Brazil
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Hautier L, Oliver JD, Pierce SE. An Overview of Xenarthran Developmental Studies with a Focus on the Development of the Xenarthrous Vertebrae. J MAMM EVOL 2017. [DOI: 10.1007/s10914-017-9412-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Steinmann P, Reed SG, Mirza F, Hollingsworth TD, Richardus JH. Innovative tools and approaches to end the transmission of Mycobacterium leprae. THE LANCET. INFECTIOUS DISEASES 2017; 17:e298-e305. [DOI: 10.1016/s1473-3099(17)30314-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 03/26/2017] [Accepted: 04/06/2017] [Indexed: 12/23/2022]
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Lavania M, Turankar RP, Karri S, Chaitanya VS, Sengupta U, Jadhav RS. Cohort study of the seasonal effect on nasal carriage and the presence of Mycobacterium leprae in an endemic area in the general population. Clin Microbiol Infect 2013; 19:970-4. [PMID: 23331372 DOI: 10.1111/1469-0691.12087] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2012] [Revised: 08/09/2012] [Accepted: 10/19/2012] [Indexed: 11/29/2022]
Abstract
Leprosy continues to be a significant health problem in certain pockets in developing countries. Better understanding of the transmission and source of the infection would help to decipher the transmission link, leading to control of the spread of the disease. The nose is considered to be a portal of entry, suggesting an aerial route for transmission through droplet infection. The evidence suggests that many individuals from endemic countries carry Mycobacterium leprae in their nasal cavities without having obvious symptoms of leprosy. The objective of the present study was to assess the presence of M. leprae on the nasal mucosa in the general population from a leprosy-endemic pocket. M. leprae detection was carried out using PCR targeting RLEP. Four hundred subjects from an area highly endemic for leprosy were included in the study and followed up during three different seasons--winter, summer, and monsoon--for evidence of nasal exposure to M. leprae. PCR positivity for M. leprae was observed in 29%, 21% and 31% of the samples collected in winter, summer and the monsoon season, respectively. Twenty-six individuals from the cohort showed amplification for M. leprae for all seasons. Our results are consistent with reports in the literature showing widespread exposure to M. leprae in the endemic community. The results also suggest possible association of the environmental conditions (climate) with the transmission pattern and levels of exposure to M. leprae. However, the present study indicated that the population from highly endemic pockets will have exposure to M. leprae irrespective of season.
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Affiliation(s)
- M Lavania
- Stanley Browne Laboratory, TLM Community Hospital, Nand Nagari, Delhi, India
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Lamont EA, Bannantine JP, Armién A, Ariyakumar DS, Sreevatsan S. Identification and characterization of a spore-like morphotype in chronically starved Mycobacterium avium subsp. paratuberculosis cultures. PLoS One 2012; 7:e30648. [PMID: 22292005 PMCID: PMC3265505 DOI: 10.1371/journal.pone.0030648] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2011] [Accepted: 12/20/2011] [Indexed: 02/06/2023] Open
Abstract
Mycobacteria are able to enter into a state of non-replication or dormancy, which may result in their chronic persistence in soil, aquatic environments, and permissive hosts. Stresses such as nutrient deprivation and hypoxia provide environmental cues to enter a persistent state; however, a clear definition of the mechanism that mycobacteria employ to achieve this remains elusive. While the concept of sporulation in mycobacteria is not novel, it continues to spark controversy and challenges our perceptions of a non-replication. We investigated the potential role of sporulation in one-year old broth cultures of Mycobacterium subsp. paratuberculosis (MAP). We show that dormant cultures of MAP contain a mix of vegetative cells and a previously unknown morphotype resembling a spore. These spore-like structures can be enriched for using sporulating media. Furthermore, purified MAP spore forms survive exposure to heat, lysozyme and proteinase K. Heat-treated spores are positive for MAP 16SrRNA and IS900. MAP spores display enhanced infectivity as well as maintain acid-fast characteristics upon germination in a well-established bovine macrophage model. This is the first study to demonstrate a new MAP morphotype possessing spore-like qualities. Data suggest that sporulation may be a viable mechanism by which MAP accomplishes persistence in the host and/or environment. Thus, our current understanding of mycobacterial persistence, pathogenesis, epidemiology and rational drug and vaccine design may need to be reevaluated.
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Affiliation(s)
- Elise A. Lamont
- Veterinary Population Medicine, University of Minnesota, St. Paul, Minnesota, United States of America
| | - John P. Bannantine
- Agricultural Research Service, National Animal Disease Center, United States Department of Agriculture (USDA), Ames, Iowa, United States of America
| | - Aníbal Armién
- Veterinary Population Medicine, University of Minnesota, St. Paul, Minnesota, United States of America
| | - Don Sanjiv Ariyakumar
- Veterinary Diagnostic Lab, University of Minnesota, St. Paul, Minnesota, United States of America
| | - Srinand Sreevatsan
- Veterinary Population Medicine, University of Minnesota, St. Paul, Minnesota, United States of America
- Department of Veterinary Biomedical Sciences, University of Minnesota, St. Paul, Minnesota, United States of America
- * E-mail:
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Truman RW, Singh P, Sharma R, Busso P, Rougemont J, Paniz-Mondolfi A, Kapopoulou A, Brisse S, Scollard DM, Gillis TP, Cole ST. Probable zoonotic leprosy in the southern United States. N Engl J Med 2011; 364:1626-33. [PMID: 21524213 PMCID: PMC3138484 DOI: 10.1056/nejmoa1010536] [Citation(s) in RCA: 204] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND In the southern region of the United States, such as in Louisiana and Texas, there are autochthonous cases of leprosy among native-born Americans with no history of foreign exposure. In the same region, as well as in Mexico, wild armadillos are infected with Mycobacterium leprae. METHODS Whole-genome resequencing of M. leprae from one wild armadillo and three U.S. patients with leprosy revealed that the infective strains were essentially identical. Comparative genomic analysis of these strains and M. leprae strains from Asia and Brazil identified 51 single-nucleotide polymorphisms and an 11-bp insertion-deletion. We genotyped these polymorphic sites, in combination with 10 variable-number tandem repeats, in M. leprae strains obtained from 33 wild armadillos from five southern states, 50 U.S. outpatients seen at a clinic in Louisiana, and 64 Venezuelan patients, as well as in four foreign reference strains. RESULTS The M. leprae genotype of patients with foreign exposure generally reflected their country of origin or travel history. However, a unique M. leprae genotype (3I-2-v1) was found in 28 of the 33 wild armadillos and 25 of the 39 U.S. patients who resided in areas where exposure to armadillo-borne M. leprae was possible. This genotype has not been reported elsewhere in the world. CONCLUSIONS Wild armadillos and many patients with leprosy in the southern United States are infected with the same strain of M. leprae. Armadillos are a large natural reservoir for M. leprae, and leprosy may be a zoonosis in the region. (Funded by the National Institute of Allergy and Infectious Diseases and others.).
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Affiliation(s)
- Richard W Truman
- Bureau of Primary Health Care, Health Resources and Services Administration, Department of Health and Human Services, National Hansen's Disease Program, Louisiana State University, Baton Rouge, USA.
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Schmitt JV, Dechandt IT, Dopke G, Ribas ML, Cerci FB, Viesi JMZ, Marchioro HZ, Zunino MMB, Miot HA. Armadillo meat intake was not associated with leprosy in a case control study, Curitiba (Brazil). Mem Inst Oswaldo Cruz 2010; 105:857-62. [DOI: 10.1590/s0074-02762010000700003] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2010] [Accepted: 09/17/2010] [Indexed: 11/21/2022] Open
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Elbuluk N, Martiniuk F, Levis WR. Erythema nodosum leprosum, Sweet's syndrome, and human immunodeficiency virus may be related through an overlap in immunopathogenesis. Int J Dermatol 2010; 49:1344-5. [PMID: 20964666 DOI: 10.1111/j.1365-4632.2009.04066.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Paradigm redux—Mycobacterium avium subspecies paratuberculosis-macrophage interactions show clear variations between bovine and human physiological body temperatures. Microb Pathog 2010; 48:143-9. [DOI: 10.1016/j.micpath.2010.02.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2009] [Revised: 02/06/2010] [Accepted: 02/18/2010] [Indexed: 11/23/2022]
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Deps PD, Ventura KG, Azevedo de Souza V, Madureira BP, Gonçalves KS, Fagundes S. Rapid HIV testing among leprosy patients: a Brazilian experience. ANNALS OF TROPICAL MEDICINE AND PARASITOLOGY 2008; 102:749-51. [PMID: 19000392 DOI: 10.1179/136485908x355300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- P D Deps
- Departamento de Medicina Social, Universidade Federal do Espírito Santo, Avenida Marechal Campos, 1468, Maruípe, Vitória, Espírito Santo, CEP: 29040-090, Brazil.
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