VIEW SELECTED LIBRARY MEDIA

Name of Media:

Impact of H1N1 on socially disadvantaged populations : systematic review

Author(s):

Andrea C. Tricco, Erin Lillie, Charlene Soobiah, Laure Perrier, Sharon E. Straus

Publisher or Source:

Public Library of Science (PLoS)

Type of Media:

Medical Journal

Media Originally for:

Critical Care Physicians

Country of Origin:

Canada

Primary Focus of Media:

Pre-Use of PICS Designation

COVID-19 Related:

No

Description:

Background:The burden of H1N1 among socially disadvantaged populations is unclear. We aimed to synthesize hospitalization, severe illness, and mortality data associated with pandemic A/H1N1/2009 among socially disadvantaged populations.Methods/Principal Findings:Studies were identified through searching MEDLINE, EMBASE, scanning reference lists, and contacting experts. Studies reporting hospitalization, severe illness, and mortality attributable to laboratory-confirmed 2009H1N1 pandemic among socially disadvantaged populations (e.g., ethnic minorities, low-income or lower-middle-income economy countries [LIC/LMIC]) were included. Two independent reviewers conducted screening, data abstraction, and quality appraisal (Newcastle Ottawa Scale). Random effects meta-analysis was conducted using SAS and Review Manager.Conclusions/Significance:Sixty-two studies including 44,777 patients were included after screening 787 citations and 164full-text articles. The prevalence of hospitalization for H1N1 ranged from 17–87% in high-income economy countries (HIC)and 11–45% in LIC/LMIC. Of those hospitalized, the prevalence of intensive care unit (ICU) admission and mortality was 6–76% and 1–25% in HIC; and 30% and 8–15%, in LIC/LMIC, respectively. There were significantly more hospitalizations among ethnic minorities versus non-ethnic minorities in two studies conducted in North America (1,313 patients, OR 2.26 [95% CI:1.53–3.32]). There were no differences in ICU admissions (n = 8 studies, 15,352 patients, OR 0.84 [0.69–1.02]) or deaths (n = 6studies, 14,757 patients, OR 0.85 [95% CI: 0.73–1.01]) among hospitalized patients in HIC. Sub-group analysis indicated that the meta-analysis results were not likely affected by confounding. Overall, the prevalence of hospitalization, severe illness,and mortality due to H1N1 was high for ethnic minorities in HIC and individuals from LIC/LMIC. However, our results suggest that there were little differences in the proportion of hospitalization, severe illness, and mortality between ethnic minorities and non-ethnic minorities living in HI

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