Learn more about how adults (including seniors) can stay protected from diseases through immunization. Presentation hosted by a Registered Nurse from York Region Public Health’s immunization program. Join in person or on Zoom. Learn more about how adults (including seniors) can stay protected from diseases through immunization. Some vaccines received in childhood provide lifelong protection, while other vaccines may require boosters or are specifically for adults. Presentation hosted by a Registered Nurse from York Region Public Health’s immunization program.