Public Health Communications

Medical Advisories and Memos

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IssuedTopics
September 3, 2025 Pfizer COVID-19 KP.2 Vaccine Market Withdrawal 
September 2, 2025 Ontario's Seasonal Respiratory Pathogen Guide
August 21, 2025 Medical Advisory: First Human Case of West Nile Virus (WNV) 2025
August 18, 2025 Rabies Vaccine and Immunoglobulin Supply
July 29, 2025 Medical Advisory: Heightened Surveillance for West Nile Virus (WNV)
July 16, 2025 Summer Vaccination Catch Up for Students 
July 10, 2025 Vaccine Eligibility Updates: Pediatric Pneumococcal and COVID-19  
July 3, 2025 Vaccine Ordering Reminders
June 13, 2025 Measles Outbreak Preparedness and Response
April 10, 2025 Updates - RSV Prevention and COVID-19 Vaccine Programs this Spring
April 7, 2025 Changes in Gonorrhea Treatment Guidance for Health Care Providers
March 5, 2025 Medical Advisory: Measles Cases in Niagara, Update 2
February 25, 2025 MEMO: Increased Measles Activity in Ontario
February 20, 2025 Vaccination Services for Students Receiving an Order for Suspension from Attendance at School (ISPA)
February 13, 2025 Tuberculosis Reporting, Tuberculin Skin Tests, and TB-UP Program
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