Increased Incidence and Mortality of COVID-19 among the U.S. Socially Vulnerable Population: Findings From the Early Phase of the Pandemic Ibraheem M. Karaye, MD, DrPH, Assistant Professor, Department of Health Professions, School of Health Professions and Human Services, Hofstra University INTRODUCTION The increased incidence and mortality rate of COVID-19 among minority populations in the U.S., particularly African Americans, has captivated significant public attention (Calma, 2020b; Collins, 2020; Eligon et al., 2020). An analysis of available data has shown that African Americans are three times more likely to contract COVID-19 and six times more likely to die from the disease than whites (Thebault, Tran, & Williams, 2020). For example, in Houston, Texas, where African Americans comprise 22.5% of the population, they make up 57% of deaths due to COVID-19 (Bludau, 2020). In Milwaukee, Wisconsin, African Americans 16
Hofstra HORIZONS t Spring 2021
constitute 26% of the population but account for 70% of COVID-19-related deaths (Thebault, Tran, & Williams, 2020). In Louisiana, 70% of deaths from the disease are among African Americans, although they constitute only 32% of the state’s population (Thebault, Tran, & Williams, 2020). Traditionally marginalized populations like racial minorities, persons with disability, the elderly, those living in poverty, and undocumented immigrants have historically borne the brunt of the health impacts of disasters because social factors predispose them to poor health outcomes (Karaye, Ross, & Horney, 2019; Palaiologou et al., 2019;
Rufat et al., 2015). For example, low socioeconomic status is associated with low per capita income, uninsured medical status, and poor access to health care, which may collectively increase the risk of adverse outcomes (Calma, 2020a; Calma, 2020b; Collins, Bhupal, & Doty, 2019; Galea, 2020; Link, 2008; U.S. Department of Health and Human Services (U.S. DHHS), 2019). Specific to COVID-19, residential overcrowding, lack of workplace protections, and inability to telework may limit adherence to physical distancing guidelines among socially vulnerable groups (Perry, Rothwell, & Harshbarger, 2018; Ray, 2020). Poor environmental conditions from historically racial-structured
Hofstra HORIZONS
redlining of neighborhoods may predispose socially vulnerable individuals to chronic respiratory conditions (e.g., asthma), hypertension, diabetes, and obesity, which may worsen an already poor medical prognosis when exposed to COVID-19 (Barnes et al., 2007; Collins, 2020; Fang, Karakiulakis, & Roth, 2020; U.S. DHHS, 2018). In order to guide public health policy and resource allocation, empirical studies on social vulnerability and COVID-19 are warranted. Using publicly available data on COVID-19 incidence and mortality, and countylevel data on social vulnerability, this study investigates the association of social vulnerability with COVID-19 incidence and mortality in the U.S. during the early phase of the pandemic.
METHODS Data Sources and Software Data from Johns Hopkins University’s Center for Systems Science and Engineering (CSSE) (current as of 04/19/2020) were used to estimate U.S. incidence and mortality for COVID-19. County-level publicly available data on social vulnerability for the lower 48 U.S. states were obtained from the Centers for Disease Control and Prevention’s (CDC, 2020) Agency for Toxic Substances and Disease Registry (ATSDR, 2020). The TIGER file for U.S. county boundaries was downloaded from data.gov (2020). ArcMap 10.4.1 (Redlands, California) was used for the analysis. Social Vulnerability Index Social factors like language, per capita income, housing, transportation, and employment status predict to a great extent the ability of individuals and communities to follow social distancing guidelines issued in response to the COVID-19 pandemic (Bonanno et al., 2007). To enable the identification of
communities most likely to require support before, during, and after a disaster or emergency, the CDC developed a Social Vulnerability Index (SVI), which includes 15 sociodemographic variables grouped into four themes. The socioeconomic theme is composed of four variables: % below poverty, % unemployed, per capita income, and % with no high school diploma. The household composition and disability theme includes: % aged 65 years or older, % aged 17 years or younger, % civilian with a disability, and % single-parent households. The theme on minority status and language includes two variables: % minority and % speak English “less than well.” Finally, the theme on housing and transportation is made up of five variables: % multiunit structures, % mobile homes, % crowding, % no vehicle, and % group quarters. The SVI is scored from 0 to 1, with larger values denoting higher social vulnerability. Additional information on SVI is provided elsewhere (CDC, 2020; Flanagan et al., 2011). Spatial Statistical Analysis Associations between social vulnerability and incidence and mortality due to COVID-19 were assessed using ordinary least squares and geographically weighted regressions. In the first instance, incidence of COVID-19 was fitted as the outcome variable and social vulnerability as the predictor, while in the second instance, mortality due to COVID-19 was fitted as the outcome variable and social vulnerability as the predictor variable. In an ordinary least squares regression, bivariate relationships are assumed to be uniform across all U.S. counties, as one parameter is estimated for each variable. However, in a geographically weighted regression, local geographic variations in relationships are accounted for by
Using publicly available data on COVID-19 incidence and mortality, and county-level data on social vulnerability, this study investigates the association of social vulnerability with COVID-19 incidence and mortality in the U.S. during the early phase of the pandemic.
estimating parameters for all sample points (i.e., counties) across the U.S. Both models were set at fixed kernel types and Akaike Information Criterion (AIC) bandwidths. To identify spatial locations where the models predicted COVID-19 incidence more accurately, I generated a choropleth map using the local coefficient of determination (R2). Results were summarized using tables and choropleth maps with hot/cold rendering scheme on model residuals.
RESULTS As of April 19, 2020, 726,697 persons have been diagnosed with COVID-19 in the U.S. The highest incidence of the disease (2,815 per 100,000) was in Rockland County, New York, and the lowest (0 cases per 100,000) was in Anderson and Kearny Counties (Kansas); Baraga and Ontonagon Counties (Michigan); Bath, Bland, Dickenson, Falls Church, Grayson, Highland, Martinsville, and Patrick Counties (Virginia); Boundary and Lewis Counties (Idaho); Brule, Butte, and Kingsbury Counties (South Hofstra HORIZONS t Spring 2021
17
Hofstra HORIZONS
Dakota); Cedar and Logan Counties (Nebraska); Hancock County (Tennessee); Hidalgo County (New Mexico); Lincoln County (Nevada); Mercer County (North Dakota); Pepin County (Wisconsin); Platte County (Wyoming); and Texas County (Missouri).
Figure 1. Incidence of COVID-19 in U.S. Counties
Overall, the risk of contracting COVID-19 was highest in New York, Georgia, New Jersey, and Louisiana (at least 1,525 per 100,000) (Figure 1). Mortality From COVID-19 In the U.S., 37,601 deaths have been attributed to COVID-19 (current as of April 19, 2020), with the highest mortality in New York City, New York (806 per 100,000). When aggregated by state, mortality was highest in New York, New Jersey, Georgia, and Louisiana (at least 83 per 100,000) (Figure 2). COVID-19 and Social Vulnerability Social vulnerability was associated with increased risk of COVID-19. A single unit increase in SVI was associated with an 8.4% increased risk of COVID-19 (Coef. = 0.084; p-value<0.05). Social vulnerability was also found to predict mortality from COVID-19 (Coef. = 0.005; p-value<0.05). The risk of becoming infected with COVID-19 (due to underlying social vulnerabilities) was found to be highest in New York, New Jersey, Georgia, and Louisiana (n≥7) (Table 1; Figure 3).
Figure 1. Incidence of COVID-19 in U.S. Counties
Figure 2. Distribution of COVID-19 Mortality in U.S. Counties
19
Figure 2. Distribution of COVID-19 Mortality in U.S. Counties
18
Hofstra HORIZONS t Spring 2021
Counties were grouped into two ordinal categories based on the strength of association between social vulnerability and risk of COVID-19 infection. Category I counties have the highest risk of social vulnerability-associated COVID-19 infection since they lie above 2.5 standard deviations from the mean (Table 2); Category II counties lie between 1.5 and 2.5 standard deviations from the mean as shown in Table 3.
Hofstra HORIZONS
DISCUSSION Since the identification of a COVID-19 index case on U.S. soil in January 2020, the disease has infected more than 700,000 Americans (as of April 19, 2020), predominantly from disadvantaged communities (Calma (2020a); Calma (2020b); CSSE, 2020; Einhorn, 2020). The findings from this study demonstrate increased incidence of and mortality from COVID-19 among socially vulnerable populations and highlights the need for addressing social justice-related conditions that may be linked to health inequities. Underserved populations are often un- or underinsured and would have to pay out-ofpocket for their medical care, making them less likely to seek COVID-19 screening and treatment (Link, 2008; Collins, Bhupal, & Doty, 2019; Calma (2020a); Calma (2020b); Galea, 2020; U.S. DHHS, 2019). Low income and traditionally marginalized communities are also more likely to reside in crowded neighborhoods and substandard housing created from redlining and structural racism (Ray, 2020; Perry, Rothwell, & Harshbarger, 2018). Such neighborhoods also may have poorer air quality and residents may be more likely to be exposed to environmental health conditions such as mold, asbestos, lead, and pest infestations that are associated with higher prevalence of asthma, obesity, hypertension, chronic respiratory disease, and other comorbidities that increase the likelihood of contracting and dying from COVID-19 (Barnes et al., 2007; Collins, 2020; Fang, Karakiulakis, & Roth, 2020; U.S. DHHS, 2018). Teleworking is an effective arrangement for physical distancing in the workplace, but is infeasible for many socially vulnerable populations who work forward-facing jobs, thus increasing their propensity of contracting and spreading the disease (Gould & Shierholz, 2020). Because of the fear of
Table 1. U.S. States and Counties With Increased Social Vulnerability to COVID-19 (n=89) State
Number of Counties
Counties
Alabama
2
Chambers, Wilcox
Arizona
1
Navajo
Arkansas
2
Cleburne, Lincoln
Colorado
3
Eagle, Gunnison, Morgan
DC
1
District of Columbia
Florida
1
Miami-Dade
Georgia
14
Baker, Clay, Turner, Wilcox, Worth, Calhoun, Dougherty, Early, Lee, Mitchell, Randolph, Sumter, Terrell, Upson
Idaho
1
Blaine
Illinois
1
Cook
Indiana
3
Franklin, Marion, Decatur
Iowa
4
Louisa, Tama, Washington, Muscatine
Kansas
1
Coffey
Kentucky
2
Butler, Jackson
Louisiana
12
Assumption, Bienville, Plaquemines, Caddo, De Soto, Iberville, Jefferson, Orleans, St. Bernard, St. Charles, St. James, St. John the Baptist
Massachusetts
3
Middlesex, Norfolk, Suffolk
Michigan
3
Macomb, Oakland, Wayne
Mississippi
1
Wilkinson
Montana
2
Toole, Golden Valley
Nebraska
1
Hall
New Jersey
10
Bergen, Hudson, Morris, Passaic, Union, Essex, Middlesex, Monmouth, Ocean, Somerset
New Mexico
1
McKinley
New York
7
New York, Orange, Nassau, Putnam, Rockland, Suffolk, Westchester
North Carolina
2
Northampton, Wayne
North Dakota
1
Slope
Ohio
2
Marion, Pickaway
Oklahoma
1
Greer
South Carolina
1
Clarendon
South Dakota
1
Minnehaha
Texas
2
Moore, Donley
Utah
1
Summit
Virginia
1
Harrisonburg City
Washington
1
Yakima
Tennessee
Vermont
Hofstra HORIZONS t Spring 2021
19
Hofstra HORIZONS
Table 2. U.S. States and Counties With Increased Risk of COVID-19 (GWR Model; n=52; Std. Resid. >2.5 SD) County
State
Incidence (per 100,000)
36119
Westchester
New York
2395.747
517.8931
01017
Chambers
Alabama
721.7177
Louisiana
553.4719
05079
Lincoln
Arkansas
852.2727
Iberville
Louisiana
830.4881
08037
Eagle
Colorado
876.1587
22051
Jefferson
Louisiana
1281.639
08051
Gunnison
Colorado
652.8462
22071
Orleans
Louisiana
1525.847
13037
Calhoun
Georgia
920.9889
22087
St. Bernard
Louisiana
865.7184
13095
Dougherty
Georgia
1601.937
22089
St. Charles
Louisiana
917.1375
13099
Early
Georgia
1619.235
22093
St. James
Louisiana
1028.631
13177
Lee
Georgia
906.9085
22095
St. John the Baptist
Louisiana
1487.032
13205
Mitchell
Georgia
969.6748
26125
Oakland
Michigan
478.7752
13243
Randolph
Georgia
2080.26
26163
Wayne
Michigan
770.0605
13261
Sumter
Georgia
1063.542
28157
Wilkinson
Mississippi
637.3117
13273
Terrell
Georgia
1711.405
30101
Toole
Montana
612.3311
13293
Upson
Georgia
645.8967
31079
Hall
Nebraska
643.8153
16013
Blaine
Idaho
2063.333
34003
Bergen
New Jersey
1304.76
18031
Decatur
Indiana
625.0235
34017
Hudson
New Jersey
1500.615
19115
Louisa
Iowa
1603.987
34027
Morris
New Jersey
810.0113
19171
Tama
Iowa
729.7971
34031
Passaic
New Jersey
1581.425
19183
Washington
Iowa
514.4548
34039
Union
New Jersey
1610.343
20031
Coffey
Kansas
562.4159
36059
Nassau
New York
2150.452
39101
Marion
Ohio
1510.147
36061
New York
New York
1625.644
39129
Pickaway
Ohio
516.6191
County
State
Incidence (per 100,000)
21031
Butler
Kentucky
481.4038
22017
Caddo
Louisiana
22031
De Soto
22047
FIPS
FIPS
36071
Orange
New York
1692.212
40055
Greer
Oklahoma
962.8852
36079
Putnam
New York
791.2937
46099
Minnehaha
South Dakota
660.6812
36087
Rockland
New York
2815.012
48129
Donley
Texas
701.6473
36103
Suffolk
New York
1815.25
49043
Summit
Utah
749.7924
Std. Resid.: Standard Residual; GWR: Geographically Weighted Regression
deportation and retaliation, undocumented immigrants, who may live in segregated neighborhoods and share the social attributes previously described, may also be less likely to present themselves to healthcare facilities for COVID-19 testing or treatment. In the event they are diagnosed with the disease, they are also less likely to isolate and observe physical distancing as they have to continue earning wages to support their families or are employed in essential 20
Hofstra HORIZONS t Spring 2021
service industries. In essence, racial and ethnic minorities and those who are socially vulnerable in other ways are more likely to contract and die from COVID-19 due to prevailing social conditions, which predispose them to poor health. To improve the health and well-being of minorities in America, interventions must address the social determinants of health, which make minorities particularly vulnerable to natural and
technological disasters and public health emergencies (Galea, 2020; Pavlos, Bartlett, & Galea, 2020). Recently, the Families First Coronavirus Response Act (H.R. 6201) (2020) provided some appropriations, including free COVID-19 testing, temporary paid emergency leave and unemployment insurance, food security initiatives, and increased Medicaid funding to states. The Department of Labor has issued guidance on state unemployment insurance programs,
Hofstra HORIZONS
permitting the provision of COVID-19-related unemployment benefits (116th Congress, 2020). The Department of Agriculture has agreed to the continued provision of summer meals during school closure (116th Congress, 2020).
Figure 3. Association Between Social Vulnerability and COVID-19 in U.S. Counties
There are several limitations to this study. First, the hierarchical model of the SVI is associated with lower precision and weaker internal validity (Rufat et al., 2019) and is sensitive to the weighting scheme chosen (Tate, 2012). However, I chose the index because of its higher accuracy compared to other models (Bakkensen, Fox-Lent, Read & Linkov, 2017; Tate, 2012). It is also publicly Figure 3. Association Between Social Vulnerability and COVID-19 in U.S. Counties available and has been cited insights. Proceedings of the American CONCLUSION Thoracic Society, 4(1), 58-68. https://doi. more than 400 times in the literature Because of underlying social org/10.1513/pats.200607-146JG (Flanagan et al., 2011). Second, the vulnerabilities, minorities are often Benfer, E.A., & Wiley, L.F. (2020) Health bivariate relationships between disproportionately affected by disasters justice strategies to combat COVID-19: COVID-19 incidence or mortality with and emergencies. Using publicly Protecting vulnerable communities during SVI were assessed without recourse to available data on COVID-19 incidence, a pandemic. Health Affairs. Retrieved potential confounding variables. In my mortality, and social vulnerability, from https://www.healthaffairs.org/ assessment, a majority of the potential I found increased incidence and do/10.1377/hblog20200319.757883/full/ confounders were already included as mortality from COVID-19 among Bludau, J. (2020). Is COVID-19 part of the 15 variables that constitute socially vulnerable populations in the disproportionately impacting black the SVI, and further adjustment may U.S. during the early phase of the residents in Houston? Here’s what experts result in multi-collinearity. To account pandemic. Strategies to mitigate the say. KHOU 11. Retrieved from https:// for this assumption, I added countydisparate burden of the disease on www.khou.com/article/news/health/ level socio-demographic covariates to coronavirus/is-covid-19traditionally marginalized communities disproportionately-killing-blackthe model (e.g., percent persons aged must consider social factors like americans-in-houston-heres-what-experts65 years or older, percent civilians with housing quality, socioeconomic status, 21 say/285-a4044110-d8e9-44bf-b5c3disability, population density) and transportation, and income that produce 511752b387f6 found results similar to the original poor health. Bonanno, G. A., Galea, S., Bucciarelli, A., bivariate model. Finally, the data from & Vlahov, D. (2007). What predicts References which this study was conducted were psychological resilience after disaster? Bakkensen, L. A., Fox-Lent, C., Read, L. downloaded on April 19, 2020. With The role of demographics, resources, and K., & Linkov, I. (2017). Validating continuing rise in incidence of the life stress. Journal of Consulting and resilience and vulnerability indices in the disease, periodic revision of the Clinical Psychology, 75(5), 671. context of natural disasters. Risk Analysis. analysis may be warranted to identify, 37(5):982-1004. Calma, J. (2020a). Air pollution could in real time, counties where socially Barnes, K. C., Grant, A. V., Hansel, N. N., make the COVID-19 pandemic worse for vulnerable communities are at the Gao, P., & Dunston, G. M. (2007). some people: Pollution piles on top of highest risk. African Americans with asthma: Genetic other risk factors. The Verge. Retrieved
Hofstra HORIZONS t Spring 2021
21
Hofstra HORIZONS
Table 3. U.S. States and Counties With Increased Risk of COVID-19 (n=37; Std. Resid. 1.5<SD<2.5) FIPS
County
State
Incidence (per 100,000)
21109
Jackson
Kentucky
322.6048466
22007
Assumption
Louisiana
653.2364899
22013
Bienville
Louisiana
490.8994789
22075
Plaquemines
Louisiana
672.5007544
25017
Middlesex
Massachusetts
514.7983588
25021
Norfolk
Massachusetts
517.7036539
25025
Suffolk
Massachusetts
957.3246657
26099
Macomb
Michigan
486.400022
30037
Golden Valley
Montana
365.408039
34013
Essex
New Jersey
1239.838543
34023
Middlesex
New Jersey
924.0517682
34025
Monmouth
New Jersey
731.744762
34029
Ocean
New Jersey
749.0291278
34035
Somerset
New Jersey
694.0602066
35031
McKinley
New Mexico
498.8299915
37131
Northampton
North Carolina
359.287584
37191
Wayne
North Carolina
306.9901162
01131
Wilcox
Alabama
433.8185674
04017
Navajo
Arizona
407.4862068
05023
Cleburne
Arkansas
280.9101489
08087
Morgan
Colorado
505.7107472
11001
District of Columbia
District of Columbia
377.7546975
12086
Miami-Dade
Florida
332.9112899
13007
Baker
Georgia
526.6622778
13061
Clay
Georgia
705.716302
13287
Turner
Georgia
638.6975579
13315
Wilcox
Georgia
486.3925883
13321
Worth
Georgia
587.7413938
17031
Cook
Illinois
396.0015013
18047
Franklin
Indiana
391.0712716
18097
Marion
Indiana
375.7067828
19139
Muscatine
Iowa
412.5257829
38087
Slope
North Dakota
400
45027
Clarendon
South Carolina
323.0108164
48341
Moore
Texas
472.7793696
51660
Harrisonburg City
Virginia
439.4899653
53077
Yakima
Washington
320.4808808
Std. Resid.: Standard Residual; GWR: Geographically Weighted Regression 22
Hofstra HORIZONS t Spring 2021
from https://www.theverge.com/2020/3/19/ 21186653/coronavirus-covid-19-air-pollutionvulnerable-lung-disease-pandemic Calma, J. (2020b). America set up black communities to be harder hit by COVID-19. Science. Retrieved from https://www. theverge.com/2020/ 4/8/21213974/african-americans-covid-19coronavirus-race-disparities Centers for Disease Control and Prevention (CDC). (2020). CDC SVI 2016 Documentation. Retrieved from https:// svi.cdc.gov/Documents/Data/2016_SVI_ Data/SVI2016Documentation.pdf Centers for Disease Control and Prevention/ Agency for Toxic Substances and Disease Registry. (2020). Social Vulnerability Index. Retrieved from https://svi.cdc.gov/data-andtools-download.html Centers for Disease Control and Prevention/ Agency for Toxic Substances and Disease Registry/Geospatial Research, Analysis, and Service Program. Social Vulnerability Index (2020). Retrieved from https://svi.cdc.gov/ data-and-tools-download.html Center for Systems Science and Engineering (CSSE). (2020). COVID-19 case counts. Johns Hopkins University. Retrieved from https://www.arcgis.com/home/item.html?id =628578697fb24d8ea4c32fa0c5ae1843 Collins, S. (2020). The Trump administration blames Covid-19 black mortality rates on poor health. It should blame its policies. Vox. Retrieved from https://www.vox.com/policy-andpolitics/2020/4/8/21213383/coronavirusblack-americans-trump-administration -high-covid-19-death-rate Collins, S., Bhupal, H., & Doty, M. (2019). Health insurance coverage eight years after the ACA: Fewer uninsured Americans and shorter coverage gaps, but more underinsured. Commonwealth Fund. Retrieved from https://doi.org/10.26099/ penv-q932 Data.gov. (2019). U.S. county boundaries. U.S. Department of Homeland Security. Retrieved from https://catalog.data.gov/ dataset/u-s-county-boundaries Einhorn, E. (2020). African Americans may be dying from COVID-19 at a higher rate. Better data is essential, experts say. NBC News. Retrieved from https://www. nbcnews.com/news/nbcblk/africanamericans-may-be-dying-covid-19-higherrate-better-n1178011
Hofstra HORIZONS
Eligon, J., Burch, A. D., Searcey, D., & Oppel Jr, R. A. (2020). Black Americans face alarming rates of coronavirus infection in some states. The New York Times, 7. Fang, L., Karakiulakis, G., & Roth, M. (2020). Are patients with hypertension and diabetes mellitus at increased risk for COVID-19 infection? The Lancet. Respiratory Medicine. Flanagan, B. E., Gregory, E. W., Hallisey, E. J., Heitgerd, J. L., & Lewis, B. (2011). A social vulnerability index for disaster management. Journal of Homeland Security and Emergency Management, 8(1). Galea, S. (2020). Closing the health gap to fight coronavirus. U.S. News and World Report. Retrieved from https://www.usnews.com/news/elections/ articles/2020-03-20/payments-toamericans-help-close-the-health-gapand-fight-coronavirus Gould, E., & Shierholz, H. (2020). Not everybody can work from home: Black and Hispanic workers are less likely to be able to telework. Economic Policy Institute. Retrieved from https://www.epi. org/blog/black-and-hispanic-workersare-much-less-likely-to-be-able-to-workfrom-home/ Karaye, I. M., Ross, A. D., & Horney, J. A. (2019). Self-rated mental and physical health of U.S. Gulf Coast residents. Journal of Community Health, 1-8.
Link, B. G. (2008). Epidemiological sociology and the social shaping of population health. Journal of Health and Social Behavior, 49(4), 367-384. Palaiologou, P., Ager, A. A., NielsenPincus, M., Evers, C. R., & Day, M. A. (2019). Social vulnerability to large wildfires in the western USA. Landscape and Urban Planning, 189, 99-116. Pavlos, C. Bartlett, C., Galea, S. (2020). Slowing the spread of COVID-19 the right way Common Wealth. Retrieved from https://commonwealthmagazine. org/opinion/slowing-the-spread-of-covid19-9-the-right-way/. Accessed 17th Jun 2020 Perry, A. M., Rothwell, J., & Harshbarger, D. (2018). The devaluation of assets in black neighborhoods. Brookings. Retrieved from https://www.brookings. edu/research/devaluation-of-assets-inblack-neighborhoods/ Ray, R. (2020). Why are blacks dying at higher rates from COVID-19? Brookings. Retrieved from https://www.brookings. edu/blog/fixgov/2020/04/09/why-areblacks-dying-at-higher-rates-fromcovid-19/ Rufat, S., Eric, T., Emrich, C. T., & Antolini, F. (2019). How valid are social vulnerability models? Ann Am Assoc Geogr, 1-23.
implications for measurement. International Journal of Disaster Risk Reduction, 14, 470-486. Tate, E. (2012). Social vulnerability indices: A comparative assessment using uncertainty and sensitivity analysis. Natural Hazards, 63(2):325-347 Thebault, R., Tran, A. B., & Williams, V. (2020). The coronavirus is infecting and killing black Americans at an alarmingly high rate. The Washington Post. Retrieved from https://www.washingtonpost.com/ nation/2020/04/07/coronavirus-isinfecting-killing-black-americans-analarmingly-high-rate-post-analysisshows/?arc404=true U.S. Department of Health and Human Services, Office for Minority Health. (2018). Asthma and African Americans. Retrieved from https://minorityhealth.hhs. gov/omh/browse.aspx?lvl=4&lvlid=15 U.S. Department of Health and Human Services, Office for Minority Health. (2019). Profile: Black/African Americans. Retrieved from https:// minorityhealth.hhs.gov/omh/browse. aspx?lvl=3&lvlid=61 116th Congress. (2020). Families First Coronavirus Response Act (H.R. 6201). Retrieved from https://www.congress. gov/bill/116th-congress/house-bill/ 6201/text
Rufat, S., Tate, E., Burton, C. G., & Maroof, A. S. (2015). Social vulnerability to floods: Review of case studies and
Ibraheem M. Karaye is assistant professor in the Department of Health Professions at Hofstra University. Previously, he was a postdoctoral researcher and adjunct assistant professor in the epidemiology program at the University of Delaware. His research uses novel statistical and spatial methods to study disaster epidemiology, the health effects of mass trauma and conflict, health disparities, and global health. Projects have included an exploration of the physical and mental health of a large representative sample of the entire U.S. Gulf Coast population, as well as studies assessing risks to environmental contamination and barriers to essential medical care such as dialysis after disasters. Recently, Dr. Karaye utilized the Centers for Disease Control and Prevention/Agency for Toxic Substances and Disease Registry’s Social Vulnerability Index (SVI) to assess the impact of social vulnerability on the coronavirus pandemic. Dr. Karaye attended medical school at Bayero University Kano, Nigeria. He holds a Master of Public Health (epidemiology) and a Doctor of Public Health (epidemiology and environmental health) from Texas A&M University, where his research leveraged spatial statistical methods to describe hurricane evacuation shelter distribution and capacity in the Houston-Galveston Metropolitan Statistical Area after Hurricane Harvey. Hofstra HORIZONS t Spring 2021
23