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Analysis & updates

May 28 2021: 20,000 Hours of Data Entry: Why We Didn’t Automate Our Data Collection
May 24 2021: A Wrap-Up: The Five Major Metrics of COVID-19 Data
May 20 2021: How Probable Cases Changed Through the COVID-19 Pandemic
May 19 2021: How Lagging Death Counts Muddled Our View of the COVID-19 Pandemic
May 13 2021: Dating Data: How We Used Multiple Dating Schemes to Provide the Most Complete Picture of the Pandemic
May 4 2021: How and Why The COVID Tracking Project Built a Screenshot System
May 3 2021: Behind The COVID Tracking Project’s Public Help Desk
April 28 2021: Releasing Our State COVID-19 Data Log
April 28 2021: How We Entered COVID-19 Testing and Outcomes Data Every Day for a Year
April 22 2021: (The Perils of) Automatically Collecting COVID Data
April 22 2021: Inside The COVID Tracking Project's Volunteer Organization
April 21 2021: Federal COVID-19 Testing Data Is Getting Better
April 14 2021: Measuring Our Impact at The COVID Tracking Project
April 8 2021: Inconsistent Reporting Practices Hampered Our Ability to Analyze COVID-19 Data. Here Are Three Common Problems We Identified.
April 7 2021: Releasing Our Annotations on State COVID-19 Current Hospitalizations Data
April 1 2021: How Not to Interpret COVID-19 Data
March 31 2021: The Decisions We Made
March 31 2021: What We Know—and What We Don’t Know—About the Impact of the Pandemic on Our Most Vulnerable Community
March 19 2021: Federal COVID Data 101: What We Know About Race and Ethnicity Data
March 18 2021: A New Surge Has Arrived in Michigan, but We Don’t Know What It Will Look Like
March 15 2021: Federal COVID Data in a Single Stream
March 8 2021: Giving Thanks and Looking Ahead: Our Data Collection Work Is Done
March 8 2021: Federal COVID Data 101: How to Find Data
March 5 2021: Releasing our Annotations on COVID-19 State Data Definitions
March 5 2021: Federal COVID Data 101: Working with Testing Data
March 4 2021: Our Final Week: This Week in COVID-19 Data, Mar 4
March 4 2021: Federal COVID Data 101: Working with CMS Nursing Home Data
March 4 2021: Where to Find Simple COVID-19 Data for the US
February 25 2021: Good News Despite Data Wobbles: This Week in COVID-19 Data, Feb 25
February 25 2021: Federal COVID Data 101: Working with Death Numbers
February 25 2021: Variants 101: FAQ
February 24 2021: Federal COVID Data 101: Working with Case Data
February 22 2021: How Day-of-Week Effects Impact COVID-19 Data
February 18 2021: More Good News: This Week in COVID-19 Data, Feb 18
February 17 2021: Federal Testing Data’s Last Mile
February 16 2021: Federal COVID Data 101: Working with Hospitalization Numbers
February 16 2021: Why Some States Won’t Share Race and Ethnicity Data on Vaccinations with the CDC—and Why That’s a Problem
February 11 2021: The Third Surge Continues to Ease: This Week in COVID-19 Data, Feb 11
February 10 2021: A Better Approach to Comparing and Assessing State-Level COVID-19 Data Reporting
February 9 2021: Learn More About Using Federal COVID-19 Data with The COVID Tracking Project
February 9 2021: Silent Data Mismatches Are Compromising Key COVID-19 Indicators
February 4 2021: The Numbers Are High but Improving: This Week in COVID-19 Data, Feb 4
February 1 2021: It’s Time: The COVID Tracking Project Will Soon Come to an End
January 29 2021: The State of COVID-19 Race and Ethnicity Data
January 28 2021: Outbreaks Ease Across the US, but Our Numbers Are Still Very High: This Week in COVID-19 Data, Jan 28
January 21 2021: Encouraging Indicators Are Everywhere, But Deaths Remain High: This Week in COVID-19 Data, Jan 21
January 15 2021: State-Level Vaccine Demographic Data is Messy and Incomplete—We Need Federal Data, Now
January 14 2021: Soaring Death Numbers and Highly Regional Outbreaks: This Week in COVID-19 Data, Jan 14
January 14 2021: Vaccine Distribution Data in Long-Term-Care Facilities Needs to Be Public
January 13 2021: The “Good” Metric Is Pretty Bad: Why It’s Hard to Count the People Who Have Recovered from COVID-19
January 11 2021: Visualizing COVID-19’s Impact on Hospitals Across the Country
January 7 2021: Record Hospitalizations Point to Trouble in California and the South: This Week in COVID-19 Data, Jan 6
December 31 2020: All Eyes on Hospitalizations: This Week in COVID-19 Data, Dec 30
December 23 2020: In the Deadliest Month Yet, the Pandemic Is Regional Again: This Week in COVID-19 Data, Dec 23
December 22 2020: How We Hope Vaccines Will Be Tracked
December 22 2020: How We Source Our Data and Why It Matters
December 21 2020: Our New Homepage Is Designed to Get You to the Data, Fast
December 17 2020: A Vaccine Arrives as Deaths Rise and Southern California Cases Soar: This Week in COVID-19 Data, Dec 17
December 16 2020: Vaccines Begin to Arrive as Cases and Deaths Keep Rising: This Week in Long-Term Care COVID-19 Data, Dec 16
December 16 2020: Test Types 101: The Pros and Cons of Different Approaches
December 15 2020: Current, New, and Cumulative Hospitalizations: What They Are and Why They Matter
December 11 2020: New HHS dataset tells us precisely where COVID-19 is hitting hospitals
December 10 2020: Our Worst Week Yet: This Week in COVID-19 Data, Dec 10
December 10 2020: Surge Continues as Northeast and West Coast Cases Spike: This Week in Long-Term Care COVID-19 Data, Dec 9
December 4 2020: What We've Learned About the HHS’s Hospitalization Data
December 3 2020: Hospitalizations Break 100,000, Holiday Data Stalls Out: This Week in COVID-19 Data, Dec 3
December 2 2020: Long-Term Care Deaths Pass 100,000 as Outbreaks Surge: This Week in Long-Term Care COVID-19 Data, Dec 2
December 1 2020: As North Dakota’s Deaths Metrics Diverge, We’re Switching to a Less Backlogged Measure of Fatalities
November 25 2020: Midwest Outbreaks Pause, Hospitalizations and Deaths Keep Rising: This Week in COVID-19 Data, Nov 25
November 25 2020: Nation Still Grappling with Long-Term Care Outbreaks as New Cases Double: This Week in Long-Term Care COVID-19 Data, Nov 24
November 24 2020: Daily COVID-19 Data Is About to Get Weird
November 23 2020: What We Know About Covid Testing Sensitivity
November 19 2020: One Million Cases in Seven Days: This Week in COVID-19 Data, Nov 19
November 17 2020: Cases Race Past Previous Highs: This Week in Long-Term Care COVID-19 Data, Nov 17
November 12 2020: A Nationwide Case Surge Hits US Hospitals: This Week in COVID-19 Data, Nov 12
November 11 2020: Ultralight Recommendations for a National Pandemic Dashboard
November 11 2020: The Third Wave of COVID-19 Deaths in Long-Term Care Facilities is Here: This Week in Long-Term Care COVID-19 Data, November 11
November 11 2020: COVID-19 Hospitalizations Have Hit an All-Time High
November 10 2020: Introducing the COVID Tracking Project City Dataset
November 5 2020: Cases Still Rising, Hospitalizations Spiking, Nursing Homes in Trouble: This Week in COVID-19 Data, Nov 5
October 29 2020: Third Surge Brings Record-Breaking Case Rates Across the Nation, This Week in COVID-19 Data, Oct 29
October 28 2020: COVID-19 Deaths Are Rising, But Fatality Rates Have Improved
October 27 2020: Good News about Florida’s Testing Data
October 27 2020: Cases Matter
October 22 2020: The Third Surge Worsens as Hospitalizations and Deaths Rise Nationwide. Plus a New Tool for Understanding Racial Data: This Week in COVID-19 Data, Oct 22
October 19 2020: The State of State Antigen Test Reporting
October 15 2020: The Third Surge Has Arrived. Plus, Updates on Data from Long-Term Care Facilities: This Week in COVID-19 Data, Oct 15
October 8 2020: Worrisome Data as the Weather Turns: This Week in COVID-19 Data, Oct 8
October 8 2020: Test Positivity in the US Is a Mess
October 1 2020: Good News in the Big Picture, but Regional and Weekly Views More Troubling: This Week in COVID-19 Data, Oct 1
September 24 2020: Trends Improve Except in the Midwest: This Week in COVID-19 Data, Sep 24
September 22 2020: Test Positivity: So Valuable, So Easy to Misinterpret
September 22 2020: Why The COVID Tracking Project’s Death Count Hasn’t Hit 200,000
September 17 2020: Holiday Reporting Lags Interrupt Positive Trends: This Week in COVID-19 Data, Sep 17
September 16 2020: State-level data obscures important variations in how cities and counties experience COVID-19
September 15 2020: The Tech Partners Who Make This Work Possible
September 10 2020: Testing In Limbo, Hospitalizations and Deaths Still Dropping: This Week in COVID-19 Data, Sep 10
September 3 2020: Cases Stop Dropping and the Midwest Heats Up: This Week in COVID-19 Data, Sep 3
September 1 2020: Introducing the Long-Term Care COVID Tracker: Tracing COVID-19’s Dramatic Toll on a Uniquely Vulnerable Population
August 27 2020: Testing Looks Shaky But National Progress Continues: This Week in COVID-19 Data, Aug 27
August 25 2020: We've Redesigned The COVID Tracking Project Site—Again—To Bring You More and Richer Data
August 21 2020: COVID-19 Race and Ethnicity Data: What’s Changed, and What Still Needs Improvement
August 20 2020: Finally, Some Good News. This Week in COVID-19 Data, Aug 20
August 14 2020: Something Is Wrong with Testing Data in the Great State of Texas
August 13 2020: Counting COVID-19 Tests: How States Do It, How We Do It, and What’s Changing
August 13 2020: Tests, Cases, and Hospitalizations Keep Dropping: This Week in COVID-19 Data, Aug 13
August 11 2020: Hospitalization Data Reported by the HHS vs. the States: Jumps, Drops, and Other Unexplained Phenomena
August 6 2020: The Last Thing We Need Is Fewer Tests: This Week in COVID-19 Data, Aug 6
July 31 2020: Is There a Right Way to Chart COVID-19 Deaths Over Time?
July 31 2020: Florida’s Per-Capita COVID-19 Cases Just Surpassed New York’s, but Are the Two Outbreaks Comparable? Yes and No.
July 30 2020: Cases Declining, Deaths Rising, Hospital Data Remains a Question Mark: This Week in COVID-19 Data, July 30
July 28 2020: What’s Going on with COVID-19 Hospitalization Data?
July 23 2020: Erratic Hospital Numbers, Deaths Still Rising: This Week in COVID-19 Data, July 23
July 16 2020: The Unchecked Rise in Cases Turns Deadly: This Week in COVID-19 Data, July 16
July 16 2020: The State of the States’ Data
July 9 2020: Record New Cases, Surging Hospitalizations, Rising Deaths: This Week in COVID-19 Data, July 9
July 8 2020: Confirmed and Probable COVID-19 Deaths, Counted Two Ways
July 8 2020: Florida’s COVID-19 Data: What We Know, What’s Wrong, and What’s Missing
July 4 2020: To Understand the US Pandemic, We Need Hospitalization Data—and We Almost Have It
July 2 2020: This Week in COVID-19 Data, July 2: Across the US, Outbreaks Are Catching Fire
June 29 2020: Better COVID-19 Data Is Coming By August 1—But Will the Public See It?
June 29 2020: The Other COVID-19 Metric We Should Be Using
June 26 2020: Why Changing COVID-19 Demographics in the US Make Death Trends Harder to Understand
June 25 2020: Weekly COVID-19 Data Update, June 25: The US Pandemic Is Surging in the South and West
June 24 2020: It's Not Just Testing
June 18 2020: Weekly COVID-19 Data Update, June 18: The Regional Gap Widens
June 17 2020: What Is a Probable Case of COVID-19?
June 11 2020: Weekly COVID-19 Data Update, June 11: Early Data from May Transmission
June 4 2020: Early COVID-19 Race Data Shows Disproportionate Loss of Black Lives—It's Time for States to Release the Rest of the Data
May 20 2020: Tracking the States and the CDC
May 14 2020: Position Statement on Antibody Data Reporting
April 23 2020: We’re Launching a New State Grading System
April 15 2020: Tracking Race and Ethnicity in the COVID-19 Pandemic

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