Blog
News, findings, and musings from the team
COVIDcast Fault Patch: JHU-CSSE is_latest Data
In August 2022, the Delphi team discovered a fault in the data that we were sending through the COVIDcast API. The fault caused the API to return past …
By Nolan Gormley
Introducing Epidata v4
Epidata v0.4.0 (“v4” for short) launched on September 26, 2022, bringing about a major revision to how we store data served by the Epidata …
By Kathryn Mazaitis, Brian Clark, George Haff
On the Predictability of COVID-19
An analysis of coverage and accuracy of the COVID-19 Forecast Hub ensemble model shows that cases, hospitalizations, and deaths exhibit different …
By Nicholas Reich, Ryan Tibshirani, Evan Ray, Roni Rosenfeld
COVID Vaccination Trends Among the Hispanic Community in the United States
Data from the Symptom Survey show vaccine hesitancy and obstacles to vaccination for Hispanic adults across the United States.
#COVIDcast #symptom surveys #vaccine
By Alex Reinhart, Esther Kim, Sarah LaRocca, Katherine Morris
Vaccine Hesitancy and the J&J Vaccine Suspension
Did the suspension of the Johnson & Johnson COVID vaccine increase vaccine hesitancy in the United States?
#COVIDcast #symptom surveys #vaccine
By Alex Reinhart
Cases2Beds: A Case Study in Actionable Intelligence
In partnership with the Allegheny County Health Department, we explored solutions to pressing challenges during the pandemic.
#hospital utilization #actionable intelligence #Excel #Allegheny County
By Ananya Joshi, Roni Rosenfeld, and Chris Scott
Home for the Holidays? The Impact of US Holidays on Social Behaviors and Preventative Measures
How did Thanksgiving and Christmas affect travel, social, and preventative behaviors in the USA during the COVID-19 pandemic?
#COVIDcast #symptom surveys #R
By Leanna Morinishi, Kris Barkume, Esther Kim, and Alex Reinhart
Unpacking the Drop in COVID-19 Case Fatality Rates
Since the pandemic started, case fatality has plummeted. But how much can we attribute this drop to treatment improvements versus increased testing, …
#CDC data #FDOH data #time series
By Helen Zhou, Cheng Cheng, Jeremy C. Weiss, Zachary C. Lipton
Using the COVID-19 Symptom Survey to Track Vaccination Uptake and Sentiment in the United States
Data from the Symptom Survey reveal how COVID-19 vaccinations are rolling out across the nation.
#COVIDcast #R #symptom surveys #vaccine
By Alex Reinhart, Esther Kim, Andy Garcia, Sarah LaRocca
Causal Inference for Social Mobility and COVID-19
How can we estimate the causal effect of mobility on COVID-19 when there could be many confounding variables?
By Matteo Bonvini, Edward Kennedy, Valérie Ventura, and Larry Wasserman