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Tag: non-pharm interventions
August 24, 2020
Quarantine and Testing Strategies in Contact Tracing for SARS-CoV-2
[pre-print, not peer-reviewed] Modeling by Quilty et al. found that for known contacts of COVID-19 cases, a quarantine period of at least ten days, combined with a PCR test on day nine, may yield similar results to a 14-day quarantine period in terms of averted transmission potential from secondary cases. Fourteen days of quarantine averted…
Modeling Contact Tracing Strategies for COVID-19 in the Context of Relaxed Physical Distancing Measures
Bilinski et al. developed a model to examine the potential for contact tracing to reduce the spread of SARS-CoV-2 and tested scenarios including relaxation of physical distancing measures. When all individuals identified through contact tracing were tested and isolation and quarantine measures were at 90% efficacy, Rt was reduced by 46%. When community detection of…
August 21, 2020
COVID-19 Effectiveness of Non-Pharmaceutical Interventions in the United States before Phased Removal of Social Distancing Protections Varies by Region
• [pre-print, not peer-reviewed] Pan et al. quantified the effectiveness of non-pharmaceutical interventions on the spread of COVID-19 in the United States and found that only the most stringent level of restrictions (e.g, sheltering in place / stay-at-home, public mask requirements, or travel restrictions) significantly decreased COVID-19 cases and deaths in the US. These policies…
The Effect of Big-City News on Rural America during the COVID-19 Pandemic
• Individual-level surveys showed that rural residents are more likely to engage in social distancing behavior than otherwise similar rural residents if their local news is produced in a city that is more affected by COVID-19. However, the effect is less than half the size of the difference in behavior that is attributable to political…
Social and Behavioral Consequences of Mask Policies during the COVID-19 Pandemic
• A survey of 6,973 German adults suggests that the implementation of mandatory masking policies in shops and aboard public transit increased compliance despite only moderate acceptance of those policies. Individuals who reported wearing masks were also more likely to report washing their hands regularly, avoiding handshakes, and keeping physical distances. • Mandatory mask policies…
August 20, 2020
Automated and Partly Automated Contact Tracing: A Systematic Review to Inform the Control of COVID-19
• A systematic review of 15 studies published from Jan 1 to April 30, 2020 reported no empirical epidemiological evidence regarding the effectiveness of automated contact tracing tools, in contrast to manual contract tracing, for identifying contacts or reducing transmission of respiratory viral infections. Four modelling studies estimated that controlling COVID-19 requires a high population…
July 31, 2020
Findings from a Probability-Based Survey of U.S. Households about Prevention Measures Based on Race, Ethnicity, and Age in Response to SARS-CoV-2
Self-reported individual behaviors to protect against SARS-CoV-2 exposure (e.g. wearing a facemask, maintaining physical distance from others, etc.) were nearly identical across white, African American, and Latino respondents in a nationally representative survey (n=1,395) of American households. Relative to white participants, African American and Latino participants were less likely to install an app that asked…
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