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Tag: non-pharm interventions
October 13, 2020
The Impact of Social Distancing on COVID19 Spread: State of Georgia Case Study
Results from an agent-based simulation model parametrized with data on Georgia population interactions and demographics over 7.5 months suggests that shelter-in-place followed by voluntary quarantine substantially reduced COVID-19 infections, resource needs, and severe outcomes. The combination reduced peak infections from approximately 180,000 under no intervention to below 53,000, and delayed the peak from April to…
The Impact of Mask-Wearing and Shelter-in-Place on COVID-19 Outbreaks in the United States
Non-medical mask-wearing by 75% of the population in one modeling study reduced infections by 38%, hospitalizations by 44%, and deaths by 47% in the absence of a shelter-in-place strategy. In combination with mask-wearing, sheltering people aged 50 to 64 decreased deaths by more than 82%. The authors noted that in this model, wearing masks with…
October 12, 2020
Safely Reopening K-12 Schools During the COVID-19 Pandemic
[Pre-print, not peer reviewed]A modeling study of different school reopening plans indicated that plans that provide for multiple days in school in a row and divide students into smaller cohorts, as well as those that emphasize distance learning, are better able to suppress outbreaks and reduce risk if an individual with COVID-19 enters the community….
An Innovative Non-Pharmaceutical Intervention to Mitigate SARS-CoV02 Spread Probability Sampling to Identify and Isolate Asymptomatic Cases
[Pre-print, not peer reviewed] Results from one modelling study suggest that a Sampling-Testing-Quarantine strategy for identifying and isolating asymptomatic individuals with COVID-19 may help slow the spread of the epidemic without school or work shutdowns. An agent-based model was designed to simulate the COVID-19 epidemic in Seattle, in order to test the strategy. The strategy involves…
Global Projections of Potential Lives Saved from COVID-19 through Universal Mask Use
[Pre-print, not peer reviewed] An IHME analysis found that universal mask use could lead to a reduction of 815,600 (95% UI 430,600 – 1,491,000) deaths from COVID-19 globally between August 26th 2020 and January 1st 2021. The analysis used meta-regression of 40 studies measuring the impact of mask use on respiratory viral infections, as well…
October 8, 2020
Stringent Containment Measures without Complete City Lockdown to Achieve Low Incidence and Mortality across Two Waves of COVID-19 in Hong Kong
Prompt and stringent containment measures in Hong Kong led to some of the lowest SARS-CoV-2 incidences and mortalities in the world (135.5 and 0.5/1,000,000 population, respectively) by April 2020. Aggressive border control measures reduced Rt from 1.35 to 0.57 and 0.92 to 0.18 in the first and second waves, respectively. Implementation of COVID-19 tests for…
Characteristics Associated with Adults Remembering to Wash Hands in Multiple Situations Before and During the COVID-19 Pandemic — United States, October 2019 and June 2020
Adults in the U.S. who responded to an internet survey in June 2020 were more likely to remember to wash their hands after experiencing respiratory symptoms (coughing, sneezing, or blowing their nose), before eating in a restaurant, and before eating at home than survey respondents from before the pandemic in October 2019. Fewer than 75%…
Barriers and Facilitators of Adherence to Social Distancing Recommendations during COVID-19 among a Large International Sample of Adults
A cross-sectional survey conducted among a convenience sample of 2013 North American and European adults between March and April 2020 found that the most common motivations for practicing social distancing included wanting to protect others (86%), self-protection (84%), and feeling a sense of responsibility to protect the community (86%). The most common barriers to social…
October 7, 2020
State-Level Needs for Social Distancing and Contact Tracing to Contain COVID-19 in the United States
A modeling study estimated that during the shelter-in-place period (11 April–29 May 2020), most US states and the District of Columbia maintained the SARS-CoV-2 effective reproduction number below 1. Following relaxations of social-distancing measures, by 22 July 2020, 42 states and the District of Columbia had >75% probability of a rebound period of increased transmission of SARS-CoV-2. Curtailing the epidemic…
Efficacy of Face Masks Neck Gaiters and Face Shields for Reducing the Expulsion of Simulated Cough-Generated Aerosols
[Pre-print, not peer-reviewed] Face coverings were found to be more effective than face shields at blocking the small aerosol particles propelled by a cough aerosol simulator. The efficacy of blocking aerosols was 99% with an N95 respirator, 59% with a procedure mask, 51% with a 3-ply cloth face mask, 47% with a polyester neck gaiter…
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