scholarly journals Modeling COVID-19 epidemics in an Excel spreadsheet: Democratizing the access to first-hand accurate predictions of epidemic outbreaks

Author(s):  
Mario Moisés Alvarez ◽  
Everardo González-González ◽  
Grissel Trujillo-de Santiago

AbstractCOVID-19, the first pandemic of this decade and the second in less than 15 years, has harshly taught us that viral diseases do not recognize boundaries; however, they truly do discriminate between aggressive and mediocre containment responses.We present a simple epidemiological model that is amenable to implementation in Excel spreadsheets and sufficiently accurate to reproduce observed data on the evolution of the COVID-19 pandemics in different regions (i.e., Italy, Spain, and New York City (NYC)). We also show that the model can be adapted to closely follow the evolution of COVID-19 in any large city by simply adjusting two parameters related to (a) population density and (b) aggressiveness of the response from a society/government to epidemics. Moreover, we show that this simple epidemiological simulator can be used to assess the efficacy of the response of a government/society to an outbreak.The simplicity and accuracy of this model will greatly contribute to democratizing the availability of knowledge in societies regarding the extent of an epidemic event and the efficacy of a governmental response.

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mario Moisés Alvarez ◽  
Everardo González-González ◽  
Grissel Trujillo-de Santiago

AbstractCOVID-19, the first pandemic of this decade and the second in less than 15 years, has harshly taught us that viral diseases do not recognize boundaries; however, they truly do discriminate between aggressive and mediocre containment responses. We present a simple epidemiological model that is amenable to implementation in Excel spreadsheets and sufficiently accurate to reproduce observed data on the evolution of the COVID-19 pandemics in different regions [i.e., New York City (NYC), South Korea, Mexico City]. We show that the model can be adapted to closely follow the evolution of COVID-19 in any large city by simply adjusting parameters related to demographic conditions and aggressiveness of the response from a society/government to epidemics. Moreover, we show that this simple epidemiological simulator can be used to assess the efficacy of the response of a government/society to an outbreak. The simplicity and accuracy of this model will greatly contribute to democratizing the availability of knowledge in societies regarding the extent of an epidemic event and the efficacy of a governmental response.


2021 ◽  
pp. 2150008
Author(s):  
Bita Alizadehtazi ◽  
Korin Tangtrakul ◽  
Sloane Woerdeman ◽  
Anna Gussenhoven ◽  
Nariman Mostafavi ◽  
...  

Urban parks and green spaces provide a wide range of ecosystem services, including social interaction and stress reduction. When COVID-19 closed schools and businesses and restricted social gatherings, parks became one of the few places that urban residents were permitted to visit outside their homes. With a focus on Philadelphia, PA and New York City, NY, this paper presents a snapshot of the park usage during the early phases of the pandemic. Forty-three Civic Scientists were employed by the research team to observe usage in 22 different parks selected to represent low and high social vulnerability, and low, medium, and high population density. Despite speculation that parks could contribute to the spread of COVID-19, no strong correlation was found between the number of confirmed COVID-19 cases in adjacent zip codes and the number of park users. High social vulnerability neighborhoods were associated with a significantly higher number of COVID-19 cases ([Formula: see text]). In addition, no significant difference in the number of park users was detected between parks in high and low vulnerability neighborhoods. The number of park users did significantly increase with population density in both cities ([Formula: see text]), though usage varied greatly by park. Males were more frequently observed than females in parks in both high vulnerability and high-density neighborhoods. Although high vulnerability neighborhoods reported higher COVID-19 cases, residents of Philadelphia and New York City appear to have been undeterred from visiting parks during this phase of the pandemic. This snapshot study provides no evidence to support closing parks during the pandemic. To the contrary, people continued to visit parks throughout the study, underscoring their evident value as respite for urban residents during the early phases of the pandemic.


2020 ◽  
Vol 154 (Supplement_1) ◽  
pp. S121-S122
Author(s):  
F M Huq Ronny

Abstract Introduction/Objective With the emergence of Novel COVID-19 infection in the New York City, at the initial phase a very limited information and guidelines were available from the federal and state health authorities and only state lab could provide the COVID -19 testing. Sparsity of the authentic information and up surging of the misinformation in the social media and rapidly evolving different reference testing laboratories were creating confusions and challenges among our clinic providers and nursing staffs. With periodic incorporation of updates on standardized protocol and guidelines, we formulated a plan and delivered that in a coordinated manner in educating the clinical and nursing staffs regarding the COVID -19 specimen collection and processing for testing to overcome that. Methods We gathered all the communications for COVID -19 from the federal, state and city health authorities and our corporate management about the testing methods, collection and processing requirements and specimen pickups. We verified and customized that information, prepared and circulated them in detailed PowerPoint presentation and then updated that periodically with any addition or changes in the testing reference labs and/or their specimen requirements. Results With periodic, standardized and updated guidelines and detailed verified information and instructions for sample processing, a uniform and much coordinated specimen collection and processing could be achieved and all of our five-borough spanning multisite municipal ambulatory clinics could collect and process the COVID-19 specimens properly. Conclusion Centralized, Planned and concerted education planning and timely delivering that to the clinical and nursing staffs could tremendously help in answering many relevant queries and curtailing confusion and properly collecting and handling the specimens in emerging infection like COVID-19 in a large city municipal ambulatory care health system.


Author(s):  
Awi Federgruen ◽  
Sherin Naha

AbstractThe number of confirmed COVID-19 cases, relative to population size, has varied greatly throughout the United States and even within the same city. In different zip codes in New York City, the epicentre of the epidemic, the number of cases per 100,000 residents has ranged from 437 to 4227, a 1:10 ratio. To guide policy decisions regarding containment and reopening of the economy, schools and other institutions, it is vital to identify the factors that drive this large variation.This paper reports on a statistical study of incidence variation by zip code across New York City. Among many socio-economic and demographic measures considered, the average household size emerges as the single most important explanatory variable: an increase in average household size by one member increases the zip code incidence rate, in our final model specification, by at least 876 cases, 23% of the range of incidence rates, at a 95% confidence level.The percentage of the population above the age of 65, the percentage below the poverty line, and their interaction term are also strongly positively associated with zip code incidence rates, In terms of ethnic/racial characteristics, the percentages of African Americans, Hispanics and Asians within the population, are significantly associated, but the magnitude of the impact is considerably smaller. (The proportion of Asians within a zip code has a negative association.)These significant associations may be explained by comorbidities, known to be more (less) prevalent among the black and Hispanic (Asian) population segments. In turn, the increased prevalence of these comorbidities among the black and Hispanic population, is, in large part, the result of poorer dietary habits and more limited access to healthcare, themselves driven by lower incomesContrary to popular belief, population density, per se, does not have a significantly positive impact. Indeed, population density and zip code incidence rate are negatively correlated, with a -33% correlation coefficient.Our model specification is based on a well-established epidemiologic model that explains the effects of household sizes on R0, the basic reproductive number of an epidemic.Our findings support implemented and proposed policies to quarantine pre-acute and post-acute patients, as well as nursing home admission policies


2019 ◽  
Vol 134 (2) ◽  
pp. 164-171 ◽  
Author(s):  
Shannon M. Farley ◽  
Andrew R. Maroko ◽  
Shakira F. Suglia ◽  
Lorna E. Thorpe

Objectives: Researchers have identified associations between neighborhood-level factors (eg, income level, tobacco retailer density) and smoking behavior, but few studies have assessed these factors in urban environments. We explored the effect of tobacco retailer density, neighborhood poverty, and housing type (multiunit and public) on smoking in a large urban environment (New York City). Methods: We used data on smoking prevalence and individual sociodemographic characteristics from the 2011-2013 New York City Community Health Survey, data on tobacco retailers from the 2012 New York City Department of Consumer Affairs, data on neighborhood sociodemographic characteristics and population density from the 2009-2013 American Community Survey, and data on multiunit and public housing from the 2012 New York City Primary Land Use Tax Lot Output data set. We used aggregate neighborhood-level variables and ordinary least squares regression, geographic weighted regression, and multilevel models to assess the effects of tobacco retailer density and neighborhood poverty on smoking prevalence, adjusting for sociodemographic characteristics (age, sex, race/ethnicity, and education) and neighborhood population density. We also assessed interactions between tobacco retailer density and poverty and each housing type on smoking. Results: Neighborhood poverty positively and significantly modified the association between tobacco retailer density and prevalence of neighborhood smoking ( β = 0.003, P = .01) when we controlled for population density, sociodemographic characteristics, and types of housing. Neighborhood poverty was positively associated with the prevalence of individual smoking ( β = 0.0099, P < .001) when we adjusted for population density, sociodemographic characteristics, and type of housing. Conclusion: More research is needed to determine all the environmental factors associated with smoking prevalence in a densely populated urban environment.


2018 ◽  
Vol 19 (1_suppl) ◽  
pp. 57S-62S
Author(s):  
Tracey Capers

The New York City Food & Fitness Partnership case study discusses how the scope and abundance of diverse community stakeholders can create difficulties when addressing and conducting work in a large city landscape. We describe our 9-year journey, from initial citywide planning, to early challenges, to rebirth as a Central Brooklyn–focused effort led by a community development corporation. We describe difficult and transparent conversations, and the various leadership changes and organizational transitions that have helped the partnership embrace equity frameworks. We illustrate how these principles have been demonstrated in their efforts to be community driven, ensuring that intended beneficiaries would be involved in every stage of decision making.


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