4.4 Article

Comparison of National Vulnerability Indices Used by the Centers for Disease Control and Prevention for the COVID-19 Response

Journal

PUBLIC HEALTH REPORTS
Volume 137, Issue 4, Pages 803-812

Publisher

SAGE PUBLICATIONS INC
DOI: 10.1177/00333549221090262

Keywords

COVID-19; vulnerability; social vulnerability index; GIS; geographic information systems

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This article describes the three vulnerability indices used by the CDC for the COVID-19 response, including the CDC Social Vulnerability Index (CDC-SVI), the US COVID-19 Community Vulnerability Index (CCVI), and the Pandemic Vulnerability Index (PVI). These indices provide important information for public health officials to understand the vulnerability of communities to disease and help plan resources and interventions.
Objective: Vulnerability indices use quantitative indicators and geospatial data to examine the level of vulnerability to morbidity in a community. The Centers for Disease Control and Prevention (CDC) uses 3 indices for the COVID-19 response: the CDC Social Vulnerability Index (CDC-SVI), the US COVID-19 Community Vulnerability Index (CCVI), and the Pandemic Vulnerability Index (PVI). The objective of this review was to describe these tools and explain the similarities and differences between them. Methods: We described the 3 indices, outlined the underlying data sources and metrics for each, and discussed their use by CDC for the COVID-19 response. We compared the percentile score for each county for each index by calculating Spearman correlation coefficients (Spearman r). Results: These indices have some, but not all, component metrics in common. The CDC-SVI is a validated metric that estimates social vulnerability, which comprises the underlying population-level characteristics that influence differences in health risk among communities. To address risk specific to the COVID-19 pandemic, the CCVI and PVI build on the CDC-SVI and include additional variables. The 3 indices were highly correlated. Spearman r for comparisons between the CDC-SVI score and the CCVI and between the CCVI and the PVI score was 0.83. Spearman r for the comparison between the CDC-SVI score and PVI score was 0.73. Conclusion: The indices can empower local and state public health officials with additional information to focus resources and interventions on disproportionately affected populations to combat the ongoing pandemic and plan for future pandemics.

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