Evaluation of immunization coverage in the adult population of Canada

Area of Science:

• Public Health
• Epidemiology
• Health Services Research

Background:

• Adult immunization rates are often suboptimal, despite the availability of vaccines for various preventable diseases.
• Understanding adult knowledge, attitudes, and practices regarding immunizations is crucial for improving public health outcomes.
• Existing data on adult immunization coverage in Canada, particularly concerning influenza and routine vaccines, requires regular assessment.

Purpose of the Study:

• To assess the immunization coverage of the adult population in Canada.
• To evaluate the availability of immunization records and knowledge of proper vaccination schedules among adults.
• To identify gaps in adult immunization information and inform targeted public health interventions.

Main Methods:

• Utilized the Canada Omnibus Survey, a national door-to-door survey.
• Conducted over four periods with a modified probability sample, completing 8021 interviews.
• Collected data on self-reported vaccination status, possession of immunization booklets, and knowledge of vaccine schedules.

Main Results:

• Only 43% of adults aged 65 and older reported receiving an influenza vaccine in the preceding year.
• Twenty-one percent of all adults reported having an immunization booklet at home (38% of those under 25, 9% of those 65+).
• Twelve percent believed they did not need regular vaccines, and only 61% of those who did knew their next due date. 48% felt they had sufficient information.

Conclusions:

• Significant gaps exist in adult immunization coverage, particularly for influenza in older adults.
• Low availability of immunization records and inconsistent knowledge of schedules indicate challenges in maintaining adult vaccination status.
• Findings underscore the necessity for enhanced public health strategies to improve adult immunization awareness and uptake.