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Topic: Geographic Spread
September 25, 2020
Disparities in COVID-19 Incidence, Hospitalizations, and Testing, by Area-Level Deprivation — Utah, March 3–July 9, 2020
In Utah, areas classified as very high deprivation had three-fold higher risk of SARS-CoV2 infection when compared to low deprivation areas. Deprivation was measured using Utah’s health improvement index in the period of March 3-June 9, 2020 and high deprivation areas contained larger proportions of Hispanic and non-white residents. Rates of hospitalization and testing were…
September 22, 2020
COVID-19 Herd Immunity in the Brazilian Amazon
[Pre-print, not peer-reviewed] Between 44% and 66% of the population of Manaus, Brazil was infected with SARS-CoV-2 through the course of the epidemic, as estimated by a study of cross-sectional monthly seroprevalence estimates in blood donors. According to Buss et al., although nonpharmaceutical interventions and other changes in population behavior may have helped to limit…
September 14, 2020
Spatial and Temporal Trends in Social Vulnerability and COVID-19 Incidence and Death Rates in the United States
[Preprint, not peer-reviewed] Classifying US counties based on a social vulnerability index and comparing COVID-19 burden over time shows that early in the COVID-19 pandemic, US counties with a high social vulnerability index had fewer COVID-19 cases. However, after March 30, the relationship reversed and counties with higher social vulnerability experienced a greater burden of…
August 14, 2020
Trends in Number and Distribution of COVID-19 Hotspot Counties — United States, March 8–July 15, 2020
US data from January 22-July 15 were analyzed to detect “hotspot” counties. No hotspots were identified prior to March 7, but 818 counties (corresponding to 80% of the US population) met hotspot criteria for one or more days between from March 8 to July 15. The number of hotspot counties peaked in early April, decreased, and then increased again in late June. Oster et al. (Aug 14, 2020)….
August 3, 2020
Trends in Emergency Department Visits and Hospital Admissions in Health Care Systems in 5 States in the First Months of the COVID-19 Pandemic in the US
Jeffery et al. examine daily emergency department (ED) visits and hospital admission rates of 24 EDs in Colorado (n=4), Connecticut (n=5), Massachusetts (n=5), New York (n=5), and North Carolina (n=5) from January 1 to April 30, 2020 and temporal associations with the onset of local COVID-19 case escalations. Compared to the annual ED volume before the COVID-19 pandemic, ED visits…
Seroprevalence of SARS-CoV-2 and Infection Fatality Ratio, Orleans and Jefferson Parishes, Louisiana, USA, May 2020
Among 2,640 individuals (61% White) in Louisiana, USA, the weighted SARS-CoV-2 exposure rate was 8%. Seroprevalence was highest (10%) in Black participants, followed by multiracial (7%), Asian (6%), and White (5%) participants. The infection fatality ratio was 1.6%, similar for White (1.6%), Black (1.7%), and multiracial (1.4%) persons, but was significantly lower for Asian persons (0.6%). Feehan et al. (July 30, 2020). Seroprevalence…
July 22, 2020
Detecting Emerging COVID-19 Community Outbreaks at High Spatiotemporal Resolution – New York City June 2020
[Pre-print, not peer reviewed] The New York City Department of Health launched a SARS-CoV-2 cluster detection system using census tract resolution and the geospatial analysis software SaTScan. During June 11-30, 28 unique primary clusters were detected, highlighting the potential of spatiotemporal surveillance to support public health efforts. Greene et al. (July 21, 2020). Detecting Emerging COVID-19 Community Outbreaks at…
July 21, 2020
COVID-19 and Inequity: A Comparative Spatial Analysis of New York City and Chicago Hot Spots
An ecological study of COVID-19 hotspots in New York City and Chicago found that hot spots included ZIP codes with lower rates of college graduates and higher proportions of people of color; however, household size had a stronger effect than population density. New York City hotspots tended to be among more working-class and middle-income neighborhoods, while Chicago’s hot spots occurred more commonly among the neighborhoods with high…
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