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Abstract
Human monkeypox is a viral zoonosis endemic to West and Central Africa that has recently generated increased interest and concern on a global scale as an emerging infectious disease threat in the midst of the slowly relenting COVID-2019 disease pandemic. The hallmark of infection is the development of a flu-like prodrome followed by the appearance of a smallpox-like exanthem. Precipitous person-to-person transmission of the virus among residents of 100 countries where it is nonendemic has motivated the immediate and widespread implementation of public health countermeasures. In this review, we discuss the origins and virology of monkeypox virus, its link with smallpox eradication, its record of causing outbreaks of human disease in regions where it is endemic in wildlife, its association with outbreaks in areas where it is nonendemic, the clinical manifestations of disease, laboratory diagnostic methods, case management, public health interventions, and future directions.
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Affiliation(s)
- Sameer Elsayed
- Department of Medicine, Western University, London, Ontario, Canada
- Department of Pathology & Laboratory Medicine, Western University, London, Ontario, Canada
- Department of Epidemiology & Biostatistics, Western University, London, Ontario, Canada
| | - Lise Bondy
- Department of Medicine, Western University, London, Ontario, Canada
| | - William P. Hanage
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
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2
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Johnstone R, Khalil N, Shojaei E, Puka K, Bondy L, Koivu S, Silverman M. Different drugs, different sides: injection use of opioids alone, and not stimulants alone, predisposes to right-sided endocarditis. Open Heart 2022; 9:openhrt-2021-001930. [PMID: 35878959 PMCID: PMC9328093 DOI: 10.1136/openhrt-2021-001930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 05/09/2022] [Indexed: 11/17/2022] Open
Abstract
Objectives Many studies suggest that infective endocarditis (IE) in people who inject drugs is predominantly right sided, while other studies suggest left sided disease; few have differentiated by class of drug used. We hypothesised that based on differing physiological mechanisms, opioids but not stimulants would be associated with right sided IE. Methods A retrospective case series of 290 adult (age ≥18) patients with self-reported recent injection drug use, admitted for a first episode of IE to one of three hospitals in London Ontario between April 2007 and March 2018, stratified patients by drug class used (opioid, stimulant or both), and by site of endocarditis. Other outcomes captured included demographics, causative organisms, cardiac and non-cardiac complications, referral to addiction services, medical versus surgical management, and survival. Results Of those who injected only opioids, 47/71 (69%) developed right-sided IE, 17/71 (25%) developed left-sided IE and 4/71 (6%) had bilateral IE. Of those who injected only stimulants, 11/24 (46%) developed right-sided IE, 11/24 (46%) developed left-sided IE and 2/24 (8%) had bilateral IE. Relative to opioid-only users, stimulant-only users were 1.75 (95% CI 1.05 to 2.93; p=0.031) times more likely to have a left or bilateral IE versus right IE. Conclusions While injection use of opioids is associated with a strong predisposition to right-sided IE, stimulants differ in producing a balanced ratio of right and left-sided disease. As the epidemic of crystal methamphetamine injection continues unabated, the rate of left-sided disease, with its attendant higher morbidity and mortality, may also grow.
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Affiliation(s)
- Rochelle Johnstone
- Infectious Diseases, London Health Sciences Centre, London, Ontario, Canada.,Medicine, Western University, London, Ontario, Canada
| | - Nadine Khalil
- Infectious Diseases, London Health Sciences Centre, London, Ontario, Canada.,Medicine, Western University, London, Ontario, Canada
| | - Esfandiar Shojaei
- Infectious Diseases, London Health Sciences Centre, London, Ontario, Canada
| | - Klajdi Puka
- Epidemiology and Biostatistics, Schulich School of Medicine and Dentistry, London, Ontario, Canada
| | - Lise Bondy
- Infectious Diseases, London Health Sciences Centre, London, Ontario, Canada.,Medicine, Western University, London, Ontario, Canada
| | - Sharon Koivu
- Family Medicine, London Health Sciences Centre, London, Ontario, Canada
| | - Michael Silverman
- Infectious Diseases, London Health Sciences Centre, London, Ontario, Canada .,Medicine, Western University, London, Ontario, Canada
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3
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Affiliation(s)
- Charlie Tan
- Division of Infectious Diseases (Tan), University of Toronto, Toronto, Ont.; Division of Orthopaedic Surgery (Howard), Western University; Division of Infectious Diseases (Bondy), St. Joseph's Health Care, London, Ont.
| | - James L Howard
- Division of Infectious Diseases (Tan), University of Toronto, Toronto, Ont.; Division of Orthopaedic Surgery (Howard), Western University; Division of Infectious Diseases (Bondy), St. Joseph's Health Care, London, Ont
| | - Lise Bondy
- Division of Infectious Diseases (Tan), University of Toronto, Toronto, Ont.; Division of Orthopaedic Surgery (Howard), Western University; Division of Infectious Diseases (Bondy), St. Joseph's Health Care, London, Ont
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Tan C, Howard JL, Bondy L. Infection à Lactobacillus paracasei d’une prothèse totale de la hanche. CMAJ 2021; 193:E74-E77. [PMID: 33431553 PMCID: PMC7773043 DOI: 10.1503/cmaj.201106-f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Charlie Tan
- Division d'infectiologie (Tan), Université de Toronto, Toronto (Ontario); Division de chirurgie orthopédique (Howard), Université Western; Division d'infectiologie (Bondy), Centre de soins de santé St. Joseph, London (Ontario).
| | - James L Howard
- Division d'infectiologie (Tan), Université de Toronto, Toronto (Ontario); Division de chirurgie orthopédique (Howard), Université Western; Division d'infectiologie (Bondy), Centre de soins de santé St. Joseph, London (Ontario)
| | - Lise Bondy
- Division d'infectiologie (Tan), Université de Toronto, Toronto (Ontario); Division de chirurgie orthopédique (Howard), Université Western; Division d'infectiologie (Bondy), Centre de soins de santé St. Joseph, London (Ontario)
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Chaudhary R, Bondy L, Zeeshan N, Mrkobrada M. Legionella co-infection in a patient with COVID-19. J Assoc Med Microbiol Infect Dis Can 2020; 5:261-263. [PMID: 36340054 PMCID: PMC9602875 DOI: 10.3138/jammi-2020-0016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 06/30/2020] [Indexed: 06/16/2023]
Abstract
We describe a case of an 80-year-old man with COVID-19 and Legionella bacterial co-infection who initially presented to hospital with fever, respiratory symptoms, and diarrhea with radiographic evidence of atypical infection. His initial nasopharyngeal swab was negative; however, a subsequent swab was positive. A Legionella urinary antigen test was positive for Legionella pneumophilia serogroup 1 antigen. Despite a low prevalence of bacterial co-infection in patients with COVID-19, a large number of patients receive antimicrobial therapy. Based on clinical context, a high index of suspicion is warranted for both bacterial and viral infectious processes during the COVID-19 pandemic; this will help to ensure that appropriate antimicrobial therapy is used.
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Affiliation(s)
| | - Lise Bondy
- Department of Medicine, Western University, London, Ontario
- Division of Infectious Diseases, St. Joseph’s Hospital, London, Ontario
| | - Nikhath Zeeshan
- Department of Medicine, Western University, London, Ontario
- Division of Infectious Diseases, St. Joseph’s Hospital, London, Ontario
| | - Marko Mrkobrada
- Department of Medicine, Western University, London, Ontario
- Division of General Internal Medicine, Western University, London, Ontario
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Meyer M, Bondy L, Koivu S, Koval J, Scarffe AD, Silverman MS. New hepatitis C diagnoses in Ontario, Canada are associated with the local prescription patterns of a controlled-release opioid. J Viral Hepat 2020; 27:774-780. [PMID: 32187428 DOI: 10.1111/jvh.13292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 02/22/2020] [Accepted: 02/26/2020] [Indexed: 01/27/2023]
Abstract
Increases in acute hepatitis C virus (HCV) incidence may be a result of the rising prevalence of injection drug use and the opioid epidemic. Among persons who inject drugs, sharing of needles/syringes is less common and leads to a smaller proportion of incident cases than does sharing of injection drug preparation equipment. In Canada and Europe, hydromorphone controlled release has been associated with frequent reuse and sharing of IDPE. Drug excipients within HCR have been shown to preserve virus survival within IDPE. We hypothesized that regional differences in HCV incidence would mirror regional differences in HCR prescribing. We reviewed HCV incidence data across Ontario, Canada for 2016. Opioid prescribing patterns in each Health Unit were reviewed. Multivariable Poisson regression analyses were performed to test the strength of hydromorphone controlled release dispensing patterns in explaining HCV incidence compared to all opioids. Less vehicle access, lack of education, lower income, less population density, higher white race/ethnicity and more opioid substitution therapy recipients remained significant positive predictors of hepatitis C incidence in the Ontario model. Higher hydromorphone controlled release dispensing rate was a stronger predictor of HCV incidence than all opioid prescriptions (standardized risk ratio = 1.17, P < .0001 vs sRR = 1.11, P = .02). When hydromorphone controlled release was excluded from the opioid prescription variable, dispensing patterns of all other opioids no longer remained a significant predictor (sRR = 1.042, P = .34). The observed relationship between HCV incidence and hydromorphone controlled release dispensing suggests that the type of opioid prescribed locally may contribute to variations in HCV incidence. These data add support to evidence that hydromorphone controlled release use is contributing to HCV spread in Ontario.
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Affiliation(s)
- Matthew Meyer
- London Health Sciences Centre, London, ON, Canada.,Department of Epidemiology and Biostatistics, Western University, London, ON, Canada.,Ivey International Centre for Health Innovation, Ivey Business School, Western University, London, ON, Canada
| | - Lise Bondy
- Division of Infectious Diseases, Western University, London, ON, Canada
| | - Sharon Koivu
- Department of Family Practice, Western University, London, ON, Canada
| | - John Koval
- Department of Epidemiology and Biostatistics, Western University, London, ON, Canada
| | - Andrew D Scarffe
- Ivey International Centre for Health Innovation, Ivey Business School, Western University, London, ON, Canada.,Telfer School of Management, University of Ottawa, Ottawa, ON, Canada
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Bondy L, Hynes B, Christner R. An unusual cervical mass. J Assoc Med Microbiol Infect Dis Can 2019; 4:113-115. [PMID: 36337738 PMCID: PMC9602954 DOI: 10.3138/jammi.2018-0042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 01/03/2019] [Indexed: 06/16/2023]
Abstract
Head and neck masses are usually indicative of infectious, neoplastic, or congenital entities. Most head and neck masses are related to local or regional disease, although systemic neoplastic disease can present in the cervical area. We present an interesting case report of a young woman with a neck mass caused by an organism most commonly associated with sexually transmitted infections, and not with the more common causes of cervical head and neck masses.
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Affiliation(s)
- Lise Bondy
- Division of Infectious Diseases, St. Joseph’s Hospital, London, Ontario, Canada
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Tookey P, Mason K, Broad J, Behm M, Bondy L, Powis J. From client to co-worker: a case study of the transition to peer work within a multi-disciplinary hepatitis c treatment team in Toronto, Canada. Harm Reduct J 2018; 15:41. [PMID: 30107808 PMCID: PMC6092784 DOI: 10.1186/s12954-018-0245-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 07/27/2018] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Despite the integration of peer workers into harm reduction services, there is little documentation regarding the experience of this integration or of models in which peers are fully integrated as members of health care teams. The purpose of this study was to gain an in-depth understanding of the transition from client to support worker from the perspective of two individuals who received treatment for hepatitis C at a multi-disciplinary, community-based program, grounded in a harm reduction approach to substance use. METHODS A participatory case study design was selected. Interviews were conducted with two current peer workers who were also involved in the study design, analysis and writing. Data was coded and analyzed using an inductive approach to identify emergent themes. RESULTS Five primary themes emerged during our analysis of the facilitators and challenges of the transition from client to support worker: (1) the role of prior experience, (2) changes in substance use practices, (3) shifts in relationships with community members and friends, (4) supportive organizational and structural factors, and (5) role transition as a journey. In some cases, themes overlapped and contained elements that were both facilitating and challenging. CONCLUSIONS The transition from client to co-worker is a gradual process and one that is supported by, and in turn helps to support, a number of other personal transitions. The cases examined here suggest that a model of peer employment with broad qualification criteria, sufficient transition timelines, flexible job responsibilities, a solid investment in the inclusion of people with lived experience, and a harm reduction framework will support successful integration of current and/or former clients into health care teams.
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Affiliation(s)
- Paula Tookey
- South Riverdale Community Health Centre, 955 Queen St East, Toronto, ON M4M 3P3 Canada
| | - Kate Mason
- South Riverdale Community Health Centre, 955 Queen St East, Toronto, ON M4M 3P3 Canada
| | - Jennifer Broad
- South Riverdale Community Health Centre, 955 Queen St East, Toronto, ON M4M 3P3 Canada
| | - Marty Behm
- South Riverdale Community Health Centre, 955 Queen St East, Toronto, ON M4M 3P3 Canada
| | - Lise Bondy
- Department of Medicine, Division of Infectious Diseases, Schulich School of Medicine and Dentistry, Western University. St. Joseph’s Health Care, 268 Grosvenor Street, London, ON N6A 4V2 Canada
| | - Jeff Powis
- Michael Garron Hospital, 835 Coxwell Ave, Toronto, ON M4C 3E7 Canada
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Silverman M, Bondy L. Association Between Hospitalization for Infection and Suicide. JAMA Psychiatry 2017; 74:198-199. [PMID: 28030744 DOI: 10.1001/jamapsychiatry.2016.3247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
| | - Lise Bondy
- University of Western Ontario, London, Ontario, Canada
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Loutfy MR, Wu W, Letchumanan M, Bondy L, Antoniou T, Margolese S, Zhang Y, Rueda S, McGee F, Peck R, Binder L, Allard P, Rourke SB, Rochon PA. Systematic review of HIV transmission between heterosexual serodiscordant couples where the HIV-positive partner is fully suppressed on antiretroviral therapy. PLoS One 2013; 8:e55747. [PMID: 23418455 PMCID: PMC3572113 DOI: 10.1371/journal.pone.0055747] [Citation(s) in RCA: 119] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 12/31/2012] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The risk of sexual HIV transmission in serodiscordant couples when the HIV-positive partner has full virologic suppression on combination antiretroviral therapy (cART) is debated. This study aims to systematically review observational studies and randomized controlled trials (RCTs), evaluating rates of sexual HIV transmission between heterosexual serodiscordant couples when the HIV-positive partner has full suppression on cART. METHODS AND FINDINGS We searched major bibliographic databases to November 2012 for relevant observational studies and RCTs without language restrictions. Conference proceedings, key journals and bibliographies were also searched. Studies reporting HIV transmission rates, cART histories and viral loads of the HIV-positive partners were included. Two reviewers extracted methodologic characteristics and outcomes. Of 20,252 citations, 3 studies met all eligibility criteria with confirmed full virologic suppression in the HIV-positive partner. We included 3 additional studies (2 cohort studies, 1 RCT) that did not confirm viral suppression in the HIV-positive partner at transmission in a secondary meta-analysis. Methodologic quality was reasonable. The rate of transmission in the 3 studies confirming virologic suppression was 0 per 100 person-years (95% CI = 0-0.05), with low heterogeneity (I(2) = 0%). When we included the 3 studies that did not confirm virologic suppression, the rate of transmission was 0.14 per 100 person-years (95%CI = 0.04-0.31) (I(2) = 0%). In a sensitivity analysis including all 6 studies, the rate of transmission was 0 per 100 person-years (95%CI = 0-0.01) after omitting all transmissions with known detectable or unconfirmed viral loads, as full suppression in these cases was unlikely. Limitations included lack of data on same-sex couples, type of sexual intercourse (vaginal vs. anal), direction of HIV transmission, exact viral load at the time of transmission, sexually transmitted infections (STI) rates, and extent of condom use. CONCLUSIONS Our findings suggest minimal risk of sexual HIV transmission for heterosexual serodiscordant couples when the HIV-positive partner has full viral suppression on cART with caveats regarding information on sexual intercourse type, STIs, and condom use. These findings have implications when counseling heterosexual serodiscordant couples on sexual and reproductive health. More research is needed to explore HIV transmission risk between same-sex couples.
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Affiliation(s)
- Mona R Loutfy
- Women's College Research Institute, Women's College Hospital, University of Toronto, Toronto, Canada.
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Jamil S, Wang SW, Bondy L, Mojtabavi S, Duronio V. Prevention of cytokine withdrawal-induced apoptosis by Mcl-1 requires interaction between Mcl-1 and Bim. Biochem Cell Biol 2011; 88:809-18. [PMID: 20921992 DOI: 10.1139/o10-004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Growth factor withdrawal from hemopoietic cells results in activation of the mitochondrial pathway of apoptosis. Members of the Bcl-2 family regulate this pathway, with anti-apoptotic members counteracting the effects of pro-apoptotic members. We investigated the effect on Mcl-1 function of mutation at a conserved threonine 163 residue (T163) in its proline, glutamate, serine, and threonine rich (PEST) region. Under normal growth conditions, Mcl-1 half-life increased with alteration of T163 to glutamic acid, but decreased with mutation to alanine. However, both T163 mutants exhibited greater pro-survival effects compared with the wild type, which can be explained by an increased stability of the T163A mutant in cytokine-starved conditions. Both the mutant forms exhibited prolonged binding to pro-apoptotic Bim in cytokine-deprived cells. The extent to which Mcl-1 mutants were able to exert their anti-apoptotic effects correlated with their ability to associate with Bim. We further observed that primary bone marrow derived macrophages survived following cytokine withdrawal as long as Bim and Mcl-1 remained associated. In our study, we were unable to detect a role for GSK-3-mediated regulation of Mcl-1 expression. Based on these results we propose that upon cytokine withdrawal, survival of hemopoietic cells depends on association between Mcl-1 and Bim. Furthermore, alteration of T163 of Mcl-1 may change the protein such that its association with Bim is affected, resulting in prolonged association and increased survival.
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Affiliation(s)
- Sarwat Jamil
- Department of Medicine, University of British Columbia and Vancouver Coastal Health Research Institute, Vancouver, BC V6H 3Z6, Canada
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