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A booster shot is an extra dose of a vaccine that can help 'boost' the immune system to better protect against disease. COVID-19 vaccines work very well to protect against serious illness and death. However, protection against more moderate disease may decrease over time. Recent research shows that a Pfizer COVID-19 booster shot strengthens the immune response in people who had had their second Pfizer shot at least 6 months earlier.

An overview of the Cambridge Police Department's daily calls for service.

People and pets should avoid contact with Alewife Brook and parts of the Mystic River due to the release of stormwater mixed with sewage into the river. The release of mixed stormwater and sewage—known as a “combined sewer overflow (CSO)”—is needed to prevent contaminated water from backing up into homes, businesses, and city streets.

An overview of the Cambridge Police Department's daily calls for service.

An overview of the Cambridge Police Department's calls for service on December 7, 2025

STEAM curriculum and activities available to educators.

In March 2024, the City Council passed Policy Order 2024 #37, which asked the Community Development Department “to work with the chairs of the Housing Committee to create zoning language that effectively promotes multifamily housing, including income-restricted affordable housing with the goal of having viable housing for everyone especially lower-income residents.” A series of Housing Committee meetings will be held to discuss the proposal throughout the summer and fall of 2024. Additional information will be posted here as the proposal is developed.

Every May, the Cambridge Council on Aging (COA) recognizes Older Americans Month, a national campaign led by the federal Administration for Communal Living that recognizes older adults’ contributions to society. The 2026 theme, Champion Your Health, underscores prevention, wellness, and personal responsibility as the foundation of healthy aging.

Project implementation for the Broadway Safety Improvement Project is moving ahead, and major installation activities will begin soon.

An overview of the Cambridge Police Department's calls for service on June 20, 2026