Understanding the widespread use of veterinary ivermectin for Chagas disease, underlying factors and implications for the COVID-19 pandemic: a convergent mixed-methods study

Autor: Ildikó Gágyor, Miriam Navarro, Jonathan Shock, Michael Pritsch, Christa Kasang, Boris Apodaca Michel, Jeremy Douglas Du Plessis, Eva-Maria Schwienhorst-Stich, Janina Zirkel, Hanna Schrader, Claudia Saavedra Irala, Gonzalo Rubilar, Carolin Gunesch, Thomas Zoller, Sandra Parisi
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: BMJ Open, Vol 12, Iss 9 (2022)
Druh dokumentu: article
ISSN: 2044-6055
DOI: 10.1136/bmjopen-2021-058572
Popis: Objectives Veterinary ivermectin (vet-IVM) has been used widely in Latin America against COVID-19, despite the lack of scientific evidence and potential risks. Widespread vet-IVM intake was also discovered against Chagas disease during a study in Bolivia prior to the pandemic. All vet-IVM-related data were extracted to understand this phenomenon, its extent and underlying factors and to discuss potential implications for the current pandemic.Design A convergent mixed-methods study design including a survey, qualitative in-depth interviews (IDI) and focus group discussions (FGD).Setting A cross-sectional study conducted in 2018 covering the geographic area of Monteagudo, an endemic municipality for Chagas disease.Participants A total of 669 adult household representatives from 26 communities participated in the survey, supplemented by 14 IDI and 2 FGD among patients, relatives and key informants.Results 9 IDI and 2 FGD contained narratives on vet-IVM use against Chagas disease. Five main themes emerged: (1) the extent of the vet-IVM phenomenon, (2) the perception of vet-IVM as a treatment for Chagas disease, (3) the vet-IVM market and the controversial role of stakeholders, (4) concerns about potential adverse events and (5) underlying factors of vet-IVM use against Chagas disease.In quantitative analysis, 28% of participants seropositive for Chagas disease had taken vet-IVM. Factors associated with multivariate analysis were advanced age (OR 17.01, 95 CI 1.24 to 36.55, p=0.027 for age above 60 years), the experience of someone close as information source (OR 3.13, 95 CI 1.62 to 5.02, p
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