JMIR Public Health and Surveillance - Vol 7, No 4 (2021): April

Theme Issue: Novel Coronavirus (COVID-19) Outbreak Rapid Reports

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Public Discourse Against Masks in the COVID-19 Era: Infodemiology Study of Twitter Data

Mohammad Al-Ramahi, Ahmed Elnoshokaty, Omar El-Gayar, Tareq Nasralah, Abdullah Wahbeh

JMIR Public Health Surveill 2021 (Apr 05); 7(4):e26780

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Reporting and Availability of COVID-19 Demographic Data by US Health Departments (April to October 2020): Observational Study

Peace Ossom-Williamson, Isaac Maximilian Williams, Kukhyoung Kim, Tiffany B Kindratt

JMIR Public Health Surveill 2021 (Apr 06); 7(4):e24288

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The Causality Inference of Public Interest in Restaurants and Bars on Daily COVID-19 Cases in the United States: Google Trends Analysis

Milad Asgari Mehrabadi, Nikil Dutt, Amir M Rahmani

JMIR Public Health Surveill 2021 (Apr 06); 7(4):e22880

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Test, Trace, and Put on the Blockchain?: A Viewpoint Evaluating the Use of Decentralized Systems for Algorithmic Contact Tracing to Combat a Global Pandemic

Moritz Platt, Anton Hasselgren, Juan Manuel Román-Belmonte, Marcela Tuler de Oliveira, Hortensia De la Corte-Rodríguez, Sílvia Delgado Olabarriaga, E Carlos Rodríguez-Merchán, Tim Ken Mackey

JMIR Public Health Surveill 2021 (Apr 06); 7(4):e26460

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Community and Campus COVID-19 Risk Uncertainty Under University Reopening Scenarios: Model-Based Analysis

James Benneyan, Christopher Gehrke, Iulian Ilies, Nicole Nehls

JMIR Public Health Surveill 2021 (Apr 07); 7(4):e24292

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Convalescent Plasma for the Prevention and Treatment of COVID-19: A Systematic Review and Quantitative Analysis

Henry T Peng, Shawn G Rhind, Andrew Beckett

JMIR Public Health Surveill 2021 (Apr 07); 7(4):e25500

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Physical Activity, Nutritional Habits, and Sleeping Behavior in Students and Employees of a Swiss University During the COVID-19 Lockdown Period: Questionnaire Survey Study

Jan Taeymans, Eefje Luijckx, Slavko Rogan, Karin Haas, Heiner Baur

JMIR Public Health Surveill 2021 (Apr 13); 7(4):e26330

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Assessment of the Effectiveness of Identity-Based Public Health Announcements in Increasing the Likelihood of Complying With COVID-19 Guidelines: Randomized Controlled Cross-sectional Web-Based Study

Alexander S Dennis, Patricia L Moravec, Antino Kim, Alan R Dennis

JMIR Public Health Surveill 2021 (Apr 13); 7(4):e25762

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“Thought I’d Share First” and Other Conspiracy Theory Tweets from the COVID-19 Infodemic: Exploratory Study

Dax Gerts, Courtney D Shelley, Nidhi Parikh, Travis Pitts, Chrysm Watson Ross, Geoffrey Fairchild, Nidia Yadria Vaquera Chavez, Ashlynn R Daughton

JMIR Public Health Surveill 2021 (Apr 14); 7(4):e26527

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A Recursive Model of the Spread of COVID-19: Modelling Study

Sergey O Ilyin

JMIR Public Health Surveill 2021 (Apr 19); 7(4):e21468

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The Impact of COVID-19 Management Policies Tailored to Airborne SARS-CoV-2 Transmission: Policy Analysis

Charles Roberto Telles, Archisman Roy, Mohammad Rehan Ajmal, Syed Khalid Mustafa, Mohammad Ayaz Ahmad, Juan Moises de la Serna, Elisandro Pires Frigo, Manuel Hernández Rosales

JMIR Public Health Surveill 2021 (Apr 21); 7(4):e20699

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Instruments and Questionnaires for Nutrition and Food Intake

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Respondent Characteristics and Dietary Intake Data Collected Using Web-Based and Traditional Nutrition Surveillance Approaches: Comparison and Usability Study

Claire M Timon, Janette Walton, Albert Flynn, Eileen R Gibney

JMIR Public Health Surveill 2021 (Apr 07); 7(4):e22759

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Cross-Sectional Studies in Public Health

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Exploring the Association Between Physical Activity and Risk of Mental Health Disorders in Saudi Arabian Adults: Cross-sectional Study

Nora A Althumiri, Mada H Basyouni, Nasser F BinDhim

JMIR Public Health Surveill 2021 (Apr 14); 7(4):e25438

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Vaccination and Immunization in the Digital Age

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The Impact of the COVID-19 Pandemic on the Uptake of Influenza Vaccine: UK-Wide Observational Study

Patrik Bachtiger, Alexander Adamson, Ji-Jian Chow, Rupa Sisodia, Jennifer K Quint, Nicholas S Peters

JMIR Public Health Surveill 2021 (Apr 14); 7(4):e26734

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Corrigenda and Addenda

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Correction: Assessment of the Effectiveness of Identity-Based Public Health Announcements in Increasing the Likelihood of Complying With COVID-19 Guidelines: Randomized Controlled Cross-sectional Web-Based Study

Alexander S Dennis, Patricia L Moravec, Antino Kim, Alan R Dennis

JMIR Public Health Surveill 2021 (Apr 15); 7(4):e29603

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Correction: Early Detection of Dengue Fever Outbreaks Using a Surveillance App (Mozzify): Cross-sectional Mixed Methods Usability Study

Von Ralph Dane Marquez Herbuela, Tomonori Karita, Thaddeus Marzo Carvajal, Howell Tsai Ho, John Michael Olea Lorena, Rachele Arce Regalado, Girly Dirilo Sobrepeña, Kozo Watanabe

JMIR Public Health Surveill 2021 (Apr 22); 7(4):e29795

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GIS (Geographic Information Systems) Applications in Public Health and Spatial Epidemiology

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Association of Opioid Use Disorder With 2016 Presidential Voting Patterns: Cross-sectional Study in New York State at Census Tract Level

Anthony Xiang, Wei Hou, Sina Rashidian, Richard N Rosenthal, Kayley Abell-Hart, Xia Zhao, Fusheng Wang

JMIR Public Health Surveill 2021 (Apr 21); 7(4):e23426

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Reviews on Public Health Technology and Innovation

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Web-Based Apps for Responding to Acute Infectious Disease Outbreaks in the Community: Systematic Review

Emma Quinn, Kai Hsun Hsiao, Isis Maitland-Scott, Maria Gomez, Melissa T Baysari, Zeina Najjar, Leena Gupta

JMIR Public Health Surveill 2021 (Apr 21); 7(4):e24330

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Viewpoint and Opinions on Technology and Innovation in Public Health

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One Year of Pandemic Learning Response: Benefits of Massive Online Delivery of the World Health Organization’s Technical Guidance

Heini Utunen, Maria D Van Kerkhove, Anna Tokar, Gillian O'Connell, Gaya M Gamhewage, Ibrahima Socé Fall

JMIR Public Health Surveill 2021 (Apr 21); 7(4):e28945

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Violence including Domestic Violence/Abuse

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Impact of Firearm Surveillance on Gun Control Policy: Regression Discontinuity Analysis

Lori Post, Maryann Mason, Lauren Nadya Singh, Nicholas P Wleklinski, Charles B Moss, Hassan Mohammad, Tariq Z Issa, Adesuwa I Akhetuamhen, Cynthia A Brandt, Sarah B Welch, James Francis Oehmke

JMIR Public Health Surveill 2021 (Apr 22); 7(4):e26042

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