Public Health Communications

Medical Advisories and Memos

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IssuedTopics
May 12, 2026 Medical Advisory: Andes Hantavirus - Situational Awareness
May 7, 2026 Stock outs: IPV (Imovax® Polio) and Engerix®-B (pediatric)
April 30, 2026 Updated Monitoring Guidance for the Chikungunya Live Attenuated Vaccine
April 28, 2026 Discontinuation of the Niagara Region Tobacco Hotline – April 30, 2026
April 13, 2026 Infant and High-Risk Children RSV Prevention Program Season End and COVID-19 Vaccine Eligibility Clarification
April 9, 2026 Specimen Collection Material Ordering Update #2
April 8, 2026 Spring Direction for COVID-19 Vaccine and RSV Prevention Programs
March 16, 2026 Measles Testing and Reporting Reminders
March 12, 2026 Specimen Collection Material Ordering Update
March 9, 2026 Immunization Record Review Deadlines, Actions and Support
February 5, 2026 Vaccine Dates
January 26, 2026 Medical Advisory: Benzanthine Penicillin G (Bicillin® L-A) Shortage
January 12, 2026 Suspension Orders and Reminder Notices
November 24, 2025 Holiday Ordering and Delivery Schedule for Vaccines and Beyfortus®
November 10, 2025 RSV Products Updates and Vaccine Ordering Reminders
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