Massachusetts Overview
- Notes, data anomalies, and official cautions for Massachusetts
- Data sources and screenshots for Massachusetts
Current data completeness grade:
Key Metrics
New tests Total PCR tests (specimens)
New cases (Notes)
Current hospitalizations
New deaths
- Sep 2: On September 2, 2020, Massachusetts reported that it had shifted to using the more restrictive August 6 definition of probable cases released by the CSTE. This change caused a significant decrease in several data points where probable cases or probable deaths were included, particularly the overall case count, which dropped by more than 7,000. Historical data was also affected.
We calculate daily changes based on the data states report each day. Some states report new cases, tests, and deaths using other methods. Please consult official state data sources for more information. We chart “New tests” using different units across jurisdictions, because not all states and territories report tests in the same units. Learn more about total test units and see what we chart for each jurisdiction in our total tests documentation.
We do not have a complete dataset for every metric in every state. If we have data for less than 30% of the past 90 days for a given metric, you’ll see a warning instead of a chart for that metric.
All the data for these charts is available for download. You can also review tabular national data on our US historical data page and data for each state and territory on the individual state or territory’s overview page.
Viral (PCR) tests
Massachusetts viral (PCR) testing Historical data(test encounters)
(specimens)
(people)
Antigen tests
Massachusetts antigen testing Historical dataWarning: Antigen reporting may significantly understate the true number of tests administered
Antibody tests
Massachusetts antibody testing Historical dataHospitalization
Massachusetts hospitalization Historical dataHospitalization (HHS data)
See this HHS hospitalization data on a map.
This data is published by HHS.
Long-term care (LTC)
Massachusetts long-term care datafrom LTC facilities56%
Race & ethnicity data
We compute the number of cases and deaths per 100k people for each race and ethnicity.
These numbers show the scale of outcomes compared to the size of each group’s population. These are not the number of cases or deaths, rather the proportion of each demographic group who have been affected.
Race & ethnicity: cases per capita
(All data is calculated)
Race & ethnicity: deaths per capita
(All data is calculated)
* Based on <10 deaths among members of this race/ethnicity. Interpret with caution.
Our latest tweets about Massachusetts
Our twitter handle is 
@COVID19Tracking
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.
December 26, 2020
Zooming into the state level, more than 10 states broke case records today: AK, AR, AZ, DE, IN, MA, ME, NJ, PA, RI, and VT. Note: AZ had a higher count on Dec. 1, but it was a data backlog.
December 4, 2020
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.
November 27, 2020
Where possible, we now use states’ “Test Encounters” or “Specimens” as the unit for these total tests, rather than “Unique People.” (This is all fairly complicated, there’s tons of detail in the blog post.) So far, we’ve switched CO, MA, ND, and RI w/ many more on deck.
September 17, 2020
Massachusetts revised their probable case definition, resulting in a drop of 7,757 cumulative cases. To allow a more reasonable view of the current nationwide trends, we placed a zero for MA's daily cases today.
September 2, 2020