March 16, 2020, 11:18 PM PDT

While Alaska reports everything from everyone, Michigan put out a press release saying they were dropping everything but positives. The resources are scarce, but the public deserves to know real positive rates for different states. https://t.co/B15DEnV2ZZ

March 19, 2020, 2:14 PM PDT

Michigan (@umichsph) made a solid update and now includes all numbers we track. Thank you! https://t.co/i8fboIRfeA

March 21, 2020, 2:18 PM PDT

New York accelerated past Washington in per capita positive tests. Here’s the top 10:

New York Washington New Jersey Louisiana DC Michigan Massachusetts Colorado Rhode Island Illinois

March 22, 2020, 2:25 PM PDT

New York continues to have the highest positive tests per capita, an indication of both the intensity of testing there and the severity of the outbreak. Here’s the top 10:

New York Washington New Jersey Louisiana DC Michigan Illinois Vermont Colorado Rhode Island

March 29, 2020, 3:21 PM PDT

One state situation worth highlighting is Michigan. Large numbers of positives, deaths rising, and an uncertain testing situation. Very worrisome overall. https://t.co/f7vdf5Vevk

April 2, 2020, 3:27 PM PDT

Michigan continues to be a real trouble spot and now has the third highest number of confirmed cases (after NY and NJ), crossing 10,000 total today.

(We don't know nearly enough about their testing regime in the state, either.) https://t.co/5Vf1ymWOMH

April 4, 2020, 6:10 PM PDT

@mjwgoblue @NateSilver538 @GovWhitmer @MichiganHHS @detroitnews @freep @BridgeMichigan I’m sure they are! -@alexismadrigal

April 5, 2020, 2:36 PM PDT

On Michigan. The state has the third-most confirmed cases and deaths (after NY, then NJ). We had not been including their negative test number because the state said it represented "specimens" not people.

April 5, 2020, 2:36 PM PDT

Today, we decided to begin using the state's number. This came after a long debate on whether we could/should calculate a more realistic number. Ultimately, we decided to use Michigan's number straight, as it would be easier for future analysts to adjust from the raw number.

April 5, 2020, 2:36 PM PDT

But unlike our other numbers, which can be considered "lower bounds" for the number of people tested, we cannot say that about Michigan's number of negative test results.

April 6, 2020, 5:50 PM PDT

As of today, 8 states are reporting racial demographics for COVID cases: CT, IL, MI, MN, NC, NJ, SC, VA

And 5 states are reporting racial demographics for COVID deaths: CT, IL, LA, MN, NC

April 7, 2020, 3:11 PM PDT

This is just another indication that COVID-19, while it broke out on the east and west coasts, will not remain a coastal phenomenon, as Michigan, Louisiana, Illinois, Indiana, Colorado, and other states experience intense outbreaks.

April 11, 2020, 2:24 PM PDT

The death toll continues to be concentrated in New York and New Jersey, although Michigan, Illinois, and Pennsylvania continue to see substantial numbers of deaths each day. https://t.co/GbJ5RNM0mc

April 12, 2020, 2:23 PM PDT

Outside the NY-centric outbreak (NY, NJ, CT), Michigan has the most severe outbreak. https://t.co/P3hqp3Hd9B

April 20, 2020, 2:09 PM PDT

Connecticut reported its single largest increase daily death toll.

Other states we're watching for Tuesday: Massachusetts, Michigan, Georgia, Florida, Texas, Kentucky. https://t.co/iVJQMeS7yQ

April 25, 2020, 2:37 PM PDT

@VoiceofVerite The states have generally been reporting people tested, not specimens tested. Michigan has long been an exception, but California joined them this week. It's tough. The units are now mixed and very hard to disentangle. -@alexismadrigal

May 2, 2020, 2:40 PM PDT

9 states reported over 50 deaths:

California: 98 Florida: 74 Illinois: 102 Indiana: 54 Massachusetts: 130 Michigan: 154 New Jersey: 204 New York: 299 Pennsylvania: 64

May 4, 2020, 3:08 PM PDT

One reason to expect that the death number will rise tomorrow would be to look at some key states—NJ, CA, MI, MA—all seem to show the same kind of reporting dip. https://t.co/m5TT3QWQfY

May 5, 2020, 2:57 PM PDT

It's worth zooming in on one state story, Michigan. A few weeks ago, it looked like it might turn into another New York.

Deaths were rising rapidly, peaking at over 200 per day. Now, deaths are slowly declining.

Testing is way up, but newly discovered cases are falling. https://t.co/5iPyKX0ML1

May 17, 2020, 2:58 PM PDT

Some of the big day appears to be a test dump from California, which reported 56k tests today. But Michigan, New York, and Georgia also reported more than 30k tests. 13 states reported more than 10k.

Overall, the U.S. hasn't been under 300k daily tests since last Sunday.

May 23, 2020, 3:12 PM PDT

Our daily update is published. We’ve now tracked 13.8 million tests, up 343k from yesterday.

5 states showed a decline in total tests due to separating out their antibody results: MI, MO, MS, TX, WV.

Details in this thread. https://t.co/y9aPPSnnor

June 2, 2020, 2:56 PM PDT

1/2 A list of states/territories in which African American COVID deaths substantially exceed the community's share of the population:

Alabama Arkansas California Colorado Connecticut D.C. Florida Georgia Illinois Indiana Kansas Kentucky Louisiana Maryland Michigan Mississippi

June 5, 2020, 3:22 PM PDT

A couple of states in the midwest changed the way they report and affected the topline numbers.

Minnesota changed to reporting total tests, not people tested. That led to a jump in our data of 45k+ tests.

Michigan added probable cases to their total, adding 5k cases.

June 5, 2020, 3:26 PM PDT

The Michigan change is important context for today's number of new cases, which is 28,615, the biggest number since 5/2.

However, without Michigan, there would still be 23k+ new cases today. https://t.co/nSoMRl6pHv

June 5, 2020, 3:29 PM PDT

While the spike in the midwest is an artifact of that Michigan reporting change, the south, southwest, and west trends are now well established. https://t.co/5TFnjkQMhx

June 12, 2020, 3:34 PM PDT

One note: Michigan began included probable cases last week. The way we initially recorded that data made it seem as if the state had a spike. MI officials were able to supply us with historical data breaking out probables — and we corrected our numbers to reflect the state's.

July 18, 2020, 3:40 PM PDT

Today, ID is back, but we’re missing hospitalization updates from states including AL, AR, CT, IA, LA, MI, MO, MS, NH, OR, RI, SC, and WY. Some due to the new HHS directive, others because it’s the weekend.

We will keep reporting on the availability of this data.

July 25, 2020, 3:49 PM PDT

It’s the weekend, so as usual, the data is less complete than on weekdays. Michigan didn’t update today bc of tech problems; New Jersey only posted positive results, no totals or negatives.

July 31, 2020, 3:46 PM PDT

The 7-day rolling average of deaths for Texas and Florida has now surpassed some early hotspots like Michigan and Massachusetts.

The trajectory looks more like harder hit states like New Jersey. https://t.co/D49edXZKXT

September 18, 2020, 9:48 AM PDT

Michigan reports a disproportionate amount of COVID-19 cases and deaths among Black people. But state-level data does not reveal the ways COVID-19 is impacting local communities. To track this, @covid19tracking has followed a few cities since end of May. https://t.co/7plsSFrTgn

September 18, 2020, 9:51 AM PDT

Tracking city-level data allows us to see that 48% of Black people who have died from COVID-19 in Michigan are from Detroit. But the decisions that individual jurisdictions make can obscure the scale of this impact. https://t.co/N7Ex0uSP3C

September 18, 2020, 9:52 AM PDT

Wayne County is Michigan’s most populous county. Its data for August 5 shows 13% of the state’s deaths among Black people came from Wayne County. But the county’s data excludes Detroit, which represents 38% of the county’s population.

September 18, 2020, 9:54 AM PDT

When we add Detroit back into the equation, it reveals that 60% of Michigan’s COVID-19 deaths among Black people happened in Wayne County. The current reporting system obscures the true impact of COVID-19 within the county, and on the state’s Black population. https://t.co/FJX27D97MW

October 11, 2020, 4:19 PM PDT

Our daily update is published. States reported 944k tests, 47k cases, 34k currently hospitalized, and 464 COVID-19 deaths, with six states not reporting today: CT, KS, MI, MO, NH, RI. https://t.co/tNvtsFLBoF

October 19, 2020, 3:46 PM PDT

Wisconsin and Michigan both included weekend backlogs in today's update resulting in very high state case counts. https://t.co/QqjgpLomBJ

November 12, 2020, 11:47 AM PST

In North and South Dakota, COVID-19 deaths per million are similar to rates in Michigan back in April - and are likely to continue rising. https://t.co/ouzy50Lgit

November 26, 2020, 4:01 PM PST

The following jurisdictions did not report today: AS, CT, FL, KS, KY, LA, MA, MI, MN, MP, NC, NH, OH, RI, SC, SD, UT, VI, VT, WY. 10 more reported partial data. Some will report two days of data tomorrow.

December 15, 2020, 4:51 PM PST

Two states—Idaho and Michigan—have added an important new metric to their dashboards...

Vaccine doses administered! https://t.co/ypQzYfHoRF

December 17, 2020, 6:06 PM PST

The past few days have brought an important new set of metrics to state dashboards: vaccine data! So far, we’ve learned of six states—ID, MI, OH, SD, TX and UT—that are posting the number of vaccines administered on their dashboards.

December 25, 2020, 4:15 PM PST

20 states provided no update: AK, CA, CT, DC, ID, KS, KY, LA, MA, MI, MN, MP, NC, ND, NH, OH, RI, SC, SD, UT, VT.

7 other states made partial updates.

January 3, 2021, 3:28 PM PST

At publish time, we had no updates from 7 of the 56 states and territories we track: AR, CT, KS, MI, MP, RI, and WA. Seven additional states did not report current hospitalizations today: HI, MN, MS, NV, OK, OR, and WI.

January 14, 2021, 2:01 PM PST

As of today, vaccine data is readily available across 49 states and territories, but our team only found vaccine data on doses administered in LTCs in seven states: Arkansas, Illinois, Kentucky, Michigan, South Carolina, Tennessee, and Texas.

March 5, 2021, 8:22 AM PST

For our API users: Yesterday, we switched totalTestResults to use values from totalTestsViral instead of being calculated from positive+negative in 4 states: IL, ME, MI, and SD.

March 5, 2021, 8:22 AM PST

These switches caused the totalTestResults field to increase by ~325k (cumulatively). The increases were driven by MI and SD, because our old totalTestResults counted MI positives and SD positives and negatives in units of unique people instead of specimens.