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8 results on '"Nzokem, Aubain"'

1. epidemic dynamics and adaptive vaccination strategy: renewal equation approach

Author

Nzokem, Aubain and Madras, Neal

Subjects
Quantitative Biology - Populations and Evolution, Mathematics - Classical Analysis and ODEs
Abstract

We use analytical methods to investigate a continuous vaccination strategy effects on the infectious disease dynamics in a closed population and a demographically open population. The methodology and key assumptions are based on Breda et al (2012). We show that the cumulative force of infection for the closed population and the endemic force of infection in the demographically open population can be reduced significantly by combining two factors: the vaccine effectiveness and the vaccination rate. The impact of these factors on the force of infection can transform an endemic steady state into a disease-free state. Keywords: Force of infection, Cumulative force of infection, Scalar-renewal equation, Per capita death rate, Lambert function, adaptive vaccination strategy

Published
2020
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8. [Prevalence of major depression in the arthritic conditions of Canadian populations: a comparative study between English-speaking majority and francophones in minority communities].

Author

Fotsing S, Nzokem AH, Grenier J, Imbeault P, Batal M, Bouchard L, and Chomienne MH

Subjects
Adult, Aged, Canada epidemiology, Female, Humans, Male, Middle Aged, Minority Groups statistics & numerical data, Prevalence, Risk Assessment, Socioeconomic Factors, Arthritis psychology, Depressive Disorder, Major epidemiology, Language, Minority Groups psychology, Social Determinants of Health
Abstract

Objective: Mental health and arthritis have been recognized as major public health issues. Francophone minority status has now been acknowledged as a health determinant. The objective of this study was to determine the prevalence of major depression among adults with arthritis in Francophone minority populations compared to the Anglophone majority., Methods: Secondary analysis of the CCHS (merger of 2003 (cycle 2.1), 2005 (Cycle 3.1), 2007 (cycle 4.1), 2008 and 2009) excluding Quebec residents. The language variable was constructed using an existing algorithm which combines maternal tongue, language of conversation, language of interview, and preferred language. Major depression was defined according to the DSM IV. Presence or absence of arthritis was a self-reported variable. The prevalence and odds ratios for depression in people with arthritis were calculated and adjusted for various factors (socio-economic, social isolation, access to health services)., Results: The study identified 159,426 Anglophones and 10,658 Francophones. Among the participants with arthritis (27%), the prevalence of depression in Francophones and Anglophones was 8.5% and 8.4%, respectively. In men, Anglophones were more at risk for depression than Francophones: OR 2.36 (95% CI: 2.07-2.70) vs. OR 1.87 (95% CI: 1.20-2.91). This trend was not observed in women., Conclusion: In our sample of people with arthritis, depression seems to affect more particularly the English-speaking men, however given the small sample size, we need to be cautious in our conclusions.

Published
2013

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