- Notes, data anomalies, and official cautions for Massachusetts
- Data sources and screenshots for Massachusetts
- Download a CSV of all data for Massachusetts
- Last updated March 6, 2021 11:59 pm ET
Data Reporting Assessment (Learn more about data quality assessments)
- Few issues exist for state-level metrics
- Few issues exist for race and ethnicity data
- Some issues exist for long-term-care data
New tests Total PCR tests (specimens)
New cases (Notes)
- 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) testsMassachusetts viral (PCR) testing Historical data
Viral (PCR) tests (HHS data)
Source: CELR data from states provided in line level format
This data is published by HHS. It may differ from state-provided data.
Antigen testsMassachusetts antigen testing Historical data
Warning: Antigen reporting may significantly understate the true number of tests administered
Antibody testsMassachusetts antibody testing Historical data
HospitalizationMassachusetts hospitalization Historical data
Hospitalization (HHS data)
See this HHS hospitalization data on a map.
This data is published by HHS.
Long-term care (LTC)Massachusetts long-term care data
from LTC facilities52.7%
Vaccinations administered through the Pharmacy Partnership for Long-Term Care Program
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
Today’s update includes no data from CT, KS, LA, or RI, and no data except hospitalizations from AL. The MA update includes data from approximately 24,800 PCR tests not reported yesterday due to a technical problem.
January 31, 2021
On a more hopeful note, hospitalizations declined in almost every state over the past week. Only New York saw an increase in hospitalized patients (4% higher), while MA was essentially flat.
January 21, 2021
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