Johns Hopkins Coronavirus Resource Center
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Data in Motion

COVID-19 Data in Motion

A 60-second, daily summary of the most important data on COVID-19 in the U.S., updated every morning.

New

Expert Insight

Q&A: Public Health Lessons from Historic (and Current) Pandemic Data

COVID-19 is just the most recent pandemic in a long history of health crises whose lessons could have helped prepare public health data infrastructure for COVID-19. What are those lessons and how can we ensure that this time they stick?

State Timeline

Impact of opening and closing decisions by state

A look at how social distancing measures may have influenced trends in COVID-19 cases and deaths

Testing Trends Tool

Track trends in COVID-19 cases and tests

Vaccines

Understand timelines, safety, and development for COVID-19 vaccines.

U.S. Vaccination Efforts

Explore Vaccination Progress by U.S. State

International Vaccination Efforts

Explore Vaccination Progress by Country

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Vaccine Story

Explore how U.S. states delivered their supplies of COVID-19 vaccines to their residents at vastly different speeds that led to vastly different results.

Vaccine State Plans

Compare the various strategies U.S. states used for rolling out vaccinations. While states all agreed health care workers should be first in line for vaccines, the states quickly diverged on who came next.

New

September 8, 2021

Full Approval: What Does FDA Approval for the Pfizer COVID-19 Vaccine Mean for Mandates? Hesitancy? The Fall?

By Chris Beyrer

August 16, 2021

Vaccination and the Delta Variant: Four Steps Forward, Two Steps Back

By Larry Corey

July 23, 2021

Tale of Two Intersecting Epidemics: Why We Need mRNA Vaccines in Africa, and For All Who Are Immunocompromised

By Larry Corey, Chris Beyrer, MD, MPH

May 26, 2021

Q&A: 80 Million Donated Vaccine Doses: Too Little, Too Late?

By William Moss

Pandemic Data Initiative

Providing an archive for the data patterns we noticed throughout the COVID crisis

New

Expert Insight

Q&A: Public Health Lessons from Historic (and Current) Pandemic Data

COVID-19 is just the most recent pandemic in a long history of health crises whose lessons could have helped prepare public health data infrastructure for COVID-19. What are those lessons and how can we ensure that this time they stick?

Pandemic Data Outlook

Our Person-Powered Public Data Machine

The Coronavirus Resource Center is composed of an extremely talented, diverse team that is dedicated to providing the best public data available. Our multi-step data visualization process is highly iterative, allowing for input at all levels before releasing data to our viewers. This commitment to high-quality public data should be modeled moving forward.

Expert Insight

Q&A: Connecting and Collecting COVID-19 Data on Race and Social Determinants of Health

Health disparities throughout the COVID-19 pandemic have been misattributed to different minority groups due to outdated and insufficient data collection on race, ethnicity, and the social determinants of health. Data policies must be updated to support burgeoning relationships with community organizations that serve these groups and improve societal wellbeing.

Pandemic Data Outlook

The State of State-Level Breakthrough Case Reporting

COVID-19 breakthrough case data is essential for tracking the virus and monitoring vaccine efficacy. Only 35 states report this data and only a portion of them report the data in a useful format. We need clear, consistent reporting of this data across all 50 states.

Tracking

Follow global cases and trends.
Updated daily.

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U.S. State Data Availability

Which states have released breakdowns of Covid-19 data by race?

Visual representations of released state data.

Reporting Frequencies

State Reporting Frequencies

Compare the various frequencies U.S. states employ for reporting on pandemic data. States are shifting their reporting to different cadences, which impacts the ability to spot timely trends.

Testing

Providing public access to COVID-19 testing data, resources, and expert analysis

Testing tracker

See changes in new cases and testing capacity in all 50 states

Understanding COVID-19 outbreaks across U.S. states and regions based on three important metrics.

Testing tracker

New tests per 100k people

A state-by-state comparison.

Testing tracker

Have new tests declined from previous week?

A state-level look at weekly changes in testing rates.

Testing tracker

Percent of new tests that are positive

See which states meet or exceed test positivity rates recommended by the World Health Organization.

Contact Tracing

Resources and Expert Guidance for Tracing the COVID-19 Pandemic

COVID-19 Contact Tracing: A course from Johns Hopkins

The COVID-19 crisis has created an unprecedented need for contact tracing across the country, requiring thousands of people to learn key skills quickly. The job qualifications for contact tracing positions differ throughout the country and the world, with some new positions open to individuals with a high school diploma or equivalent.

news | February 24, 2021

USA Today: COVID-19 exposure warnings for iPhone, Android phones: apps still await widespread adoption

Six months after the arrival of the first COVID-19-warning smartphone apps built on a privacy-preserving framework from Apple and Google, they remain yet another coronavirus pandemic scarcity.

resource | November 25, 2020

Johns Hopkins Bloomberg School of Public Health: Monitoring and Evaluating Contact Tracing Programs

Contact tracing courses, metrics and tools from the Bloomberg School of Public Health.

resource | November 25, 2020

Johns Hopkins Bloomberg School of Public Health: ConTESSA

An interactive tool that supplements the Measuring and Maximizing Impact of COVID-19 Contact Tracing Coursera course. This tool can be used to estimate the impact of a contact tracing program on transmission and strategize how to increase it.

E-Learning: Understanding the COVID-19 Pandemic

Insights from Johns Hopkins University Experts

Insights From Johns Hopkins University Experts

Upon completing this course, you will be able to:

  • Describe characteristics of the COVID-19 disease, including how it is diagnosed and treated
  • Understand the development of the COVID-19 pandemic, and emerging trends throughout the world
  • Discuss societal challenges raised by COVID-19 and opportunities to address them

Module 1

Virology, Coronaviruses, and COVID-19

Module 2

Diagnosing, Treating, and Preventing COVID-19

Module 3

Medical Therapies and Vaccines in Development

Module 4

Epidemiology: Understanding the Spread of COVID-19


Take Online Course

Latest News & Resources

New

webcasts | September 17, 2021

Pandemic Data Initiative Expert Forum: Back to School

Join us for the second Pandemic Data Initiative Expert Forum. We will discuss the importance of data for leadership and policy in schools.

New

news | September 14, 2021

CNBC: Three big questions you probably have about COVID booster shots – and answers from top experts

Top U.S. health officials announced that booster shots would be ready for distribution to all eligible Americans beginning the week of Sept. 20, starting eight months after their second dose of Pfizer or Moderna’s vaccine.

webcasts | September 10, 2021

The Johns Hopkins 30-Minute COVID-19 Briefing: Expert Insights on What You Need to Know Now

Friday September 10, 2021 12:00-12:30 ET Join experts from the Johns Hopkins Coronavirus Resource Center (CRC) at 12pm ET on Fridays for timely, accessible updates on the state of the pandemic and the public health response.


experts | September 9, 2021

Bloomberg: Pre-COVID normal returns sooner than you think: Johns Hopkins

Johns Hopkins Center for Health Security Senior Scholar Jennifer Nuzzo discusses pandemic fatigue, incentives to sway the unvaccinated, and the need to ramp up COVID testing. 

news | September 9, 2021

The New York Times: A big Delta unknown

Does the Delta variant cause more severe illness than earlier versions of the COVID virus?

webcasts | September 3, 2021

The Johns Hopkins 30-Minute COVID-19 Briefing: Expert Insights on What You Need to Know Now

Friday September 3, 2021 12:00-12:30 ET Join experts from the Johns Hopkins Coronavirus Resource Center (CRC) at 12pm ET on Fridays for timely, accessible updates on the state of the pandemic and the public health response.

news | August 30, 2021

Verywell Health: Experts divided over current need for COVID booster shots

Many experts are questioning whether there is enough evidence proving a need for boosters given that the vaccines remain effective at what they were intended to do—preventing serious disease, hospitalization, and death from COVID-19. 

webcasts | August 20, 2021

The Johns Hopkins 30-Minute COVID-19 Briefing: Expert Insights on What You Need to Know Now

Friday August 20, 2021 12:00-12:30 ET Join experts from the Johns Hopkins Coronavirus Resource Center (CRC) at 12pm ET on Fridays for timely, accessible updates on the state of the pandemic and the public health response.

news | August 19, 2021

CNN: Parents worried about COVID in schools have an easy weapon at hand, experts say – fresh air

Air quality experts are urging schools to do more this fall to make sure kids – as well as teachers and staff – are breathing air as free as possible from coronavirus particles.

news | August 18, 2021

The Hill: CDC studies show vaccine protection against infections wanes over time

Three studies published by the Centers for Disease Control and Prevention (CDC) on Wednesday show that protection against infection from the coronavirus in vaccinated individuals has declined over time.

news | August 15, 2021

USA Today: New COVID cases in US soar 700% week-over-week since July 1, CDC says

In the first 12 days of August, the United States reported more coronavirus cases than it did in all of July.

news | August 15, 2021

CNN: A third dose of COVID-19 vaccine is now authorized for some. Here’s what you need to know about boosters for all

The US Food and Drug Administration on Thursday authorized third doses of both the Pfizer/BioNTech or Moderna coronavirus vaccines for certain immunocompromised people.

news | August 12, 2021

Bloomberg: Increased COVID testing needed to combat Delta: Johns Hopkins

Johns Hopkins Center for Health Security Senior Scholar Jennifer Nuzzo discusses increased vaccinations across the United States, the role of testing in fighting COVID-19, and company vaccine mandates.

webcasts | August 5, 2021

HOW COVID CHANGED EDUCATION: What we need to know now and in coming years

Join top Johns Hopkins University experts at 11 a.m. Thursday Aug. 5 as they discuss critical information for educators, parents, and policymakers.

experts | July 29, 2021

If We Must Wear Masks Again, We Need a Smart Approach

Despite hopes of a summer free from Covid-19 worry, the Centers for Disease Control and Prevention is now recommending that vaccinated people wear masks in certain areas. While masks are important for protecting against infections, the United States must proceed carefully.