Massachusetts Coronavirus Map and Case Count

Tracking Coronavirus in Massachusetts: Latest Map and Case Count

New reported cases

2,000
4,000
6,000 cases
Feb. 2020
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sept.
Oct.
Nov.
Dec.
Jan.
Feb. 2021
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sept.
Oct.
Nov.
Dec.
7–day average
4,696

These are days with a reporting anomaly. Read more here.

Tests

Feb. 2020 Dec. 2021

Hospitalized

Feb. 2020 Dec. 2021

Deaths

Feb. 2020 Dec. 2021
Daily Avg. on Dec. 7 14-Day Change Total Reported
cases 4,696 +67% 951,969
tests 91,289 +36%
hospitalized 947 +50%
deaths 23 +72% 19,567
About this data Sources: State and local health agencies (cases, deaths); U.S. Department of Health and Human Services (tests, hospitalizations). Tests, hospitalizations and deaths show seven-day averages. Hospitalization data may not yet be available for yesterday. Figures shown are the most recent data available.

Daily new hospital admissions by age in Massachusetts

This chart shows for each age group the number of people per 100,000 that were newly admitted to a hospital with Covid-19 each day, according to data from the U.S. Department of Health and Human Services. Dips and spikes could be due to inconsistent reporting by hospitals.

  • Under 18
  • 18-29
  • 30-49
  • 50-59
  • 60-69
  • 70+
  • All ages
10
20 daily admissions per 100,000
Oct. 2020
Nov.
Dec.
Jan.
Feb.
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sept.
Oct.
Nov.
Dec.
About this data Sources: U.S. Department of Health and Human Services (daily confirmed and suspected Covid-19 hospital admissions); Census Bureau (population data). Data prior to October 2020 was unreliable. Data reported in the most recent seven days may be incomplete.

Hot spots

Average daily cases per 100,000 people in past week
10
30
50
70
100
250
About this data The hot spots map shows the share of population with a new reported case over the last week.

Vaccinations

At least one dose Fully vaccinated
All ages
87%
72%
12 and up
97%
82%
65 and up
>99%
92%

See more details ›

About this data Sources: Centers for Disease Control and Prevention, state governments, U.S. Census Bureau. The C.D.C. reported on Nov. 30 that booster doses are sometimes misclassified as first doses, which may overestimate first dose coverage among adults.

Mask mandates and guidance

As of Dec. 2, 2021

The New York Times is tracking mask policies at the state level, including current federal guidance by county and where leaders are rejecting such guidance or mandates. Read more here ›

  • Masks are mandated in schools for some students by state officials.

Vaccinations

At least one dose Fully vaccinated
All ages
87%
72%
12 and up
97%
82%
65 and up
>99%
92%

See more details ›

About this data Sources: Centers for Disease Control and Prevention, state governments, U.S. Census Bureau. The C.D.C. reported on Nov. 30 that booster doses are sometimes misclassified as first doses, which may overestimate first dose coverage among adults.

Mask mandates and guidance

As of Dec. 2, 2021

The New York Times is tracking mask policies at the state level, including current federal guidance by county and where leaders are rejecting such guidance or mandates. Read more here ›

  • Masks are mandated in schools for some students by state officials.

How trends have changed in Massachusetts

New reported cases by day
2,000
4,000
6,000 cases
Feb. 2020
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sept.
Oct.
Nov.
Dec.
Jan.
Feb. 2021
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sept.
Oct.
Nov.
Dec.
7–day average
4,696

These are days with a reporting anomaly. Read more here.

Tests by day
50,000 tests
Feb. 2020
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sept.
Oct.
Nov.
Dec.
Jan.
Feb. 2021
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sept.
Oct.
Nov.
Dec.
7–day average
0
Hospitalizations
2,000
4,000 hospitalized
Feb. 2020
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sept.
Oct.
Nov.
Dec.
Jan.
Feb. 2021
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sept.
Oct.
Nov.
Dec.
7–day average
947
New reported deaths by day
50
100
150 deaths
Feb. 2020
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sept.
Oct.
Nov.
Dec.
Jan.
Feb. 2021
Mar.
Apr.
May
Jun.
Jul.
Aug.
Sept.
Oct.
Nov.
Dec.
7–day average
23

These are days with a reporting anomaly. Read more here.

About this data Sources: State and local health agencies (cases, deaths); U.S. Department of Health and Human Services (tests, hospitalizations). The seven-day average is the average of the most recent seven days of data. Cases and deaths data are assigned to dates based on when figures are publicly reported. Currently hospitalized is the most recent number of patients with Covid-19 reported by hospitals in the state for the four days prior. Dips and spikes could be due to inconsistent reporting by hospitals. Hospitalization numbers early in the pandemic are undercounts due to incomplete reporting by hospitals to the federal government. Tests represent the number of individual P.C.R. viral test specimens tested by laboratories and state health departments and reported to the federal government. Hospitalizations and tests are counted based on dates assigned by the U.S. Department of Health and Human Services and are subject to historical revisions.

Outbreak clusters

In the first year of the pandemic, The Times tracked cases in the types of places with some of the worst outbreaks, like nursing homes, food processing plants and correctional facilities.

Cases Connected To Location Cases
Soldiers Home in Holyoke veterans center and hospital Holyoke, Mass. 161
Courtyard Nursing Care Center Medford, Mass. 72
Julian J Levitt Family Nursing Home Longmeadow, Mass. 66
Eastpointe Rehabilitation Chelsea, Mass. 64
M I (Mary Immaculate) Health/Care Services & assisted living Lawrence, Mass. 63
Christopher House of Worcester Worcester, Mass. 62
Katzman Family Center Chelsea, Mass. 56
Belmont Manor Nursing Home Belmont, Mass. 56
St. Patrick's Manor retirement community Framingham, Mass. 53
About this data Information on cases linked to these places comes from official releases by governments, companies and institutions directly. The Times is publishing lists of groupings of 50 or more cases related to a specific site, workplace or event.

About the data

In data for Massachusetts, The Times primarily relies on reports from the state. The state does not update its data on weekends. Prior to July 2021, it released new data daily. The state reports cases and deaths based on a person’s permanent or usual residence.

The Times has identified reporting anomalies or methodology changes in the data.

More about reporting anomalies or changes
  • Nov. 25, 2021: Massachusetts did not announce new cases and deaths for the Thanksgiving holiday.
  • Nov. 11, 2021: Massachusetts did not announce new data because of the Veterans Day holiday.
  • Oct. 11, 2021: Massachusetts did not release new data because of the holiday.
  • Sept. 6, 2021: The daily count could be artificially low because many jurisdictions did not announce new data on Labor Day.
  • Jan. 2, 2021: Massachusetts reported data for two days after reporting no data on New Year's Day.
  • Dec. 26, 2020: Massachusetts reported data for Dec. 25 and 26 after reporting no data on Christmas.
  • Nov. 27, 2020: Massachusetts reported data for Nov. 26 and Nov. 27 after reporting no data on Thanksgiving.
  • Sept. 2, 2020: Massachusetts removed 8,050 cases and 26 deaths after revising its methodology for probable cases and deaths.
  • Aug. 23, 2020: Massachusetts did not report new cases or deaths during data system maintenance.
  • June 30, 2020: Massachusetts removed duplicate reports, causing a decrease in the total number of deaths.
  • June 1, 2020: Massachusetts began reporting probable cases and deaths dating back to March 1, leading to a large one-day increase.
  • April 24, 2020: Massachusetts announced a backlog of cases from earlier in April.
  • As of Aug. 12, Massachusetts reports only lab-confirmed cases by county. The state previously included probable cases. Massachusetts did not report county-level updates from Aug. 12 to Aug. 17.

The tallies on this page include probable and confirmed cases and deaths.

Confirmed cases and deaths, which are widely considered to be an undercount of the true toll, are counts of individuals whose coronavirus infections were confirmed by a molecular laboratory test. Probable cases and deaths count individuals who meet criteria for other types of testing, symptoms and exposure, as developed by national and local governments.

Governments often revise data or report a single-day large increase in cases or deaths from unspecified days without historical revisions, which can cause an irregular pattern in the daily reported figures. The Times is excluding these anomalies from seven-day averages when possible. For agencies that do not report data every day, variation in the schedule on which cases or deaths are reported, such as around holidays, can also cause an irregular pattern in averages. The Times uses an adjustment method to vary the number of days included in an average to remove these irregularities.

Credits

By Jordan Allen, Sarah Almukhtar, Aliza Aufrichtig, Anne Barnard, Matthew Bloch, Sarah Cahalan, Weiyi Cai, Julia Calderone, Keith Collins, Matthew Conlen, Lindsey Cook, Gabriel Gianordoli, Amy Harmon, Rich Harris, Adeel Hassan, Jon Huang, Danya Issawi, Danielle Ivory, K.K. Rebecca Lai, Alex Lemonides, Eleanor Lutz, Allison McCann, Richard A. Oppel Jr., Jugal K. Patel, Alison Saldanha, Kirk Semple, Shelly Seroussi, Julie Walton Shaver, Amy Schoenfeld Walker, Anjali Singhvi, Charlie Smart, Mitch Smith, Albert Sun, Rumsey Taylor, Lisa Waananen Jones, Derek Watkins, Timothy Williams, Jin Wu and Karen Yourish.   ·   Reporting was contributed by Jeff Arnold, Ian Austen, Mike Baker, Brillian Bao, Ellen Barry, Shashank Bengali, Samone Blair, Nicholas Bogel-Burroughs, Aurelien Breeden, Elisha Brown, Emma Bubola, Maddie Burakoff, Alyssa Burr, Christopher Calabrese, Julia Carmel, Zak Cassel, Robert Chiarito, Izzy Colón, Matt Craig, Yves De Jesus, Brendon Derr, Brandon Dupré, Melissa Eddy, John Eligon, Timmy Facciola, Bianca Fortis, Jake Frankenfield, Matt Furber, Robert Gebeloff, Thomas Gibbons-Neff, Matthew Goldstein, Grace Gorenflo, Rebecca Griesbach, Benjamin Guggenheim, Barbara Harvey, Lauryn Higgins, Josh Holder, Jake Holland, Anna Joyce, John Keefe, Ann Hinga Klein, Jacob LaGesse, Alex Lim, Alex Matthews, Patricia Mazzei, Jesse McKinley, Miles McKinley, K.B. Mensah, Sarah Mervosh, Jacob Meschke, Lauren Messman, Andrea Michelson, Jaylynn Moffat-Mowatt, Steven Moity, Paul Moon, Derek M. Norman, Anahad O’Connor, Ashlyn O’Hara, Azi Paybarah, Elian Peltier, Richard Pérez-Peña, Sean Plambeck, Laney Pope, Elisabetta Povoledo, Cierra S. Queen, Savannah Redl, Scott Reinhard, Chloe Reynolds, Thomas Rivas, Frances Robles, Natasha Rodriguez, Jess Ruderman, Kai Schultz, Alex Schwartz, Emily Schwing, Libby Seline, Rachel Sherman, Sarena Snider, Brandon Thorp, Alex Traub, Maura Turcotte, Tracey Tully, Jeremy White, Kristine White, Bonnie G. Wong, Tiffany Wong, Sameer Yasir and John Yoon.   ·   Data acquisition and additional work contributed by Will Houp, Andrew Chavez, Michael Strickland, Tiff Fehr, Miles Watkins, Josh Williams, Nina Pavlich, Carmen Cincotti, Ben Smithgall, Andrew Fischer, Rachel Shorey, Blacki Migliozzi, Alastair Coote, Jaymin Patel, John-Michael Murphy, Isaac White, Steven Speicher, Hugh Mandeville, Robin Berjon, Thu Trinh, Carolyn Price, James G. Robinson, Phil Wells, Yanxing Yang, Michael Beswetherick, Michael Robles, Nikhil Baradwaj, Ariana Giorgi, Bella Virgilio, Dylan Momplaisir, Avery Dews, Bea Malsky, Ilana Marcus and Jason Kao.

Additional contributions to Covid-19 risk assessments and guidance by Eleanor Peters Bergquist, Aaron Bochner, Shama Cash-Goldwasser, Sydney Jones and Sheri Kardooni of Resolve to Save Lives.

About the data

In data for Massachusetts, The Times primarily relies on reports from the state. The state does not update its data on weekends. Prior to July 2021, it released new data daily. The state reports cases and deaths based on a person’s permanent or usual residence.

The Times has identified reporting anomalies or methodology changes in the data.

More about reporting anomalies or changes
  • Nov. 25, 2021: Massachusetts did not announce new cases and deaths for the Thanksgiving holiday.
  • Nov. 11, 2021: Massachusetts did not announce new data because of the Veterans Day holiday.
  • Oct. 11, 2021: Massachusetts did not release new data because of the holiday.
  • Sept. 6, 2021: The daily count could be artificially low because many jurisdictions did not announce new data on Labor Day.
  • Jan. 2, 2021: Massachusetts reported data for two days after reporting no data on New Year's Day.
  • Dec. 26, 2020: Massachusetts reported data for Dec. 25 and 26 after reporting no data on Christmas.
  • Nov. 27, 2020: Massachusetts reported data for Nov. 26 and Nov. 27 after reporting no data on Thanksgiving.
  • Sept. 2, 2020: Massachusetts removed 8,050 cases and 26 deaths after revising its methodology for probable cases and deaths.
  • Aug. 23, 2020: Massachusetts did not report new cases or deaths during data system maintenance.
  • June 30, 2020: Massachusetts removed duplicate reports, causing a decrease in the total number of deaths.
  • June 1, 2020: Massachusetts began reporting probable cases and deaths dating back to March 1, leading to a large one-day increase.
  • April 24, 2020: Massachusetts announced a backlog of cases from earlier in April.
  • As of Aug. 12, Massachusetts reports only lab-confirmed cases by county. The state previously included probable cases. Massachusetts did not report county-level updates from Aug. 12 to Aug. 17.

The tallies on this page include probable and confirmed cases and deaths.

Confirmed cases and deaths, which are widely considered to be an undercount of the true toll, are counts of individuals whose coronavirus infections were confirmed by a molecular laboratory test. Probable cases and deaths count individuals who meet criteria for other types of testing, symptoms and exposure, as developed by national and local governments.

Governments often revise data or report a single-day large increase in cases or deaths from unspecified days without historical revisions, which can cause an irregular pattern in the daily reported figures. The Times is excluding these anomalies from seven-day averages when possible. For agencies that do not report data every day, variation in the schedule on which cases or deaths are reported, such as around holidays, can also cause an irregular pattern in averages. The Times uses an adjustment method to vary the number of days included in an average to remove these irregularities.