Dog Disease Outbreaks in Massachusetts
ParvoMaps is tracking 13 confirmed reports in Massachusetts, 3 of them still active. Every report links to its source. See them plotted on the live map.
13
Reports on record
3
Currently active
0
Last 7 days
1
Last 30 days
What's been reported in Massachusetts
11
1
1
Where in the state
3
3
2
1
1
1
Recent reports
Blue-green Algae
Active · Aug 20, 2026
Boston
Charles River Lower Basin downstream of the Massachusetts Avenue Bridge (Esplanade side); BPHC advisory 8/20, expanded 8/27 downstream of the BU Center for Computing. Do not let dogs swim or drink. Separate advisory from the July upstream West Roxbury stretch
Source ↗Rabies · in wildlife
Active · Jul 28, 2026
Tisbury
Brown bat killed by a pet cat at a Tisbury residence on Martha's Vineyard, confirmed rabid 7/28; third rabies case ever recorded on the island, three household cats quarantined 45 days
Source ↗Blue-green Algae
Historical · Jul 24, 2026
Brewster, Barnstable County
Walkers Pond (landing off Slough Rd), Brewster
Source ↗Blue-green Algae
Historical · Jul 22, 2026
Boston, Suffolk County
Charles River, Kendrick St (Needham) to Spring St (West Roxbury), including Millennium Park and Cutler Park
Source ↗Common questions
Is there a dog disease outbreak in Massachusetts right now?
ParvoMaps is currently tracking 3 active reports in Massachusetts, most commonly blue-green algae. Reports stay marked active for a set window per disease, then move to historical.
What dog diseases have been reported in Massachusetts?
Reports in Massachusetts cover blue-green algae, rabies, parvovirus, drawn from news coverage, health department notices and community reports.
How do I know if a report near me is still current?
Every report carries the date it happened and a link to its source. Each disease has its own active window — blue-green algae advisories expire in 30 days, parvo reports stay active for a year — so a pin marked active is one still worth acting on.
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