hand holding COVID-19 vaccine bottle

When Can I Get Vaccinated?

As public COVID-19 vaccinations begin, it’s important to understand Massachusetts' vaccine rollout plan and when you will be eligible to get vaccinated.

What is a Super Spreader Event?

Super spreader events occur when rates of transmission are higher due to a combination of the amount of virus carried by the infected individual and the environmental conditions. Learn more.

What is herd immunity? graphic

What is Herd Immunity?

Herd Immunity describes a situation when enough of the population is immune to a disease—either through vaccination or previous illnesses—to make its spread within a community unlikely. Learn how this applies to COVID-19.