2026

• Physicians Advisory - Testing and Antiviral Treatment for COVID-19 and Influenza - Sent February 9, 2026
• Physicians Advisory - Pharmacists Antiviral Prophylaxis  - Sent January 8, 2026

2025

• Physicians Update - Vaccine Distribution During the Holidays - Sent December 3, 2025
• Physicians Advisory - Students with Incomplete Immunization Records - Sent November 19, 2025
• Physicians Advisory - Measles Outbreak End - Sent October 14, 2025
• Physicians Advisory - Rocky Mountain Spotted Fever (RMSF) - Sent September 24, 2025
• Physicians Advisory - Flu & COVID-19 Immunization Programs – Fall/Winter 2025/26 - Sent September 22, 2025
  • 2025-2026 Influenza  COVID-19 Vaccine Order Form
• Physicians Advisory - RSV Immunization Programs – Fall/Winter 2025/26
  • RSV Order Form - Sent September 17, 2025
• Memo - Pfizer Withdrawal - Sent September 2, 2025
• Physicians Advisory - Rabies Vaccine and Immunoglobulin Shortage - Sent August 18, 2025
• Physicians Advisory - Eastern Equine Encephalitis Virus - Sent July 31, 2025
• Physicians Advisory - Duty to Report Animal Bites 2025 - Sent June 6, 2025
• Physicians Update - Measles Vaccination Update - Sent May 26, 2025
  • HCP Measles RTSCC Letter (Word .docx)
• Physicians Update - WDG is now a Risk Area for Measles Transmission - Sent May 6, 2025
• Physicians Update - Spring 2025 COVID Boosters - Sent April 28, 2025
• Physicians Update - Increasing measles exposures in WDG - Sent April 22, 2025
• Physicians Update - Measles Vaccination Update - Sent April 17, 2025
• Physicians Update - Respiratory Syncytial Virus (RSV) Prophylaxis Program – 2024/2025 - Sent April 8, 2025
• Physicians Update - Updated High Risk Areas for Measles Transmission in Ontario - Sent April 3, 2025
• Physician Alert - First Case of Measles in WDG - Sent March 3, 2025
• Physicians Advisory - Early Measles Vaccination for Patients in Higher-Risk Areas - Sent February 26, 2025
• Physicians Advisory - Changes to Treatment of Uncomplicated Gonococcal Infections - Sent February 3, 2025
• Physicians Update - Students with Incomplete Immunization Records - Sent January 22, 2025

2024

• Physicians Advisory - Students with Incomplete Immunization Records - Sent November 18, 2024
• Physicians Advisory - Measles Exposures in WDG - Sent November 8, 2024
• Physicians Update - Fall 2024 COVID Vaccine Update - Sent October 15, 2024
• Physicians Update - Infant and High Risk Children RSV Program – Fall/Winter 2024/2025 - Sent October 9, 2024
• Physicians Advisory - COVID-19 Rapid Antigen Testing Changes - Sent October 4, 2024
• Advisory - Legionellosis Prevention - Sent September 24, 2024
• Physicians Advisory - Antiviral and Vaccine Guidance for Influenza - Sent September 20, 2024
• Physicians Advisory - First Reported Case of Influenza - Sent September 20, 2024
• Physicians Update - RSV Fall Winter - Sent September 19, 2024
  • RSV and RSV Prophylaxis Order Form 2024-25
• Memo - 2024-25 UIIP Vaccine Distribution - Sent September 10, 2024
• Physicians Advisory - Human Case of Rabies in Ontario - Sent September 9, 2024
  • 2024.09.06-CMOH Memo Rabies to Hospitals and Primary Care
• Physicians Alert - Market Withdrawal of COVID-19 XBB Vaccines - Sent August 28, 2024
  • 2024.08.27 CMOH Memo XBB Market Withdrawal-EN
• Physicians Advisory - New Tuberculosis Form and Guidance on Reporting - Sent August 19, 2024
• Physicians Update - Extended Eligibility for Shingles Vaccine - Sent August 15, 2024
• Memo - Prevnar 20 Storage Requirements - Sent August 12, 2024
• Physicians Advisory - Physicians Advisory - RSV Immunization Fall-Winter - Sent August 1, 2024
• Physicians Advisory - Pneumococcal Vaccine Program transition - Sent July 16, 2024
• Physicians Update - Children in Licensed Childcare with Incomplete Immunization Records - Sent July 2, 2024
• Physicians Advisory - Updated Recommendations on Oral Polio Vaccine - Sent June 25, 2024
• Physicians Advisory - Local Rabies Risk and Duty to Report - Sent May 29, 2024
• Physicians Alert - Pertussis - Sent May 13, 2024
• Physicians Advisory - Use of Pentacel DTaP-IPV-Hib Vaccine - Sent April 25, 2024
• Physicians Advisory - Spring 2024 COVID-19 Booster Campaign - Sent April 16, 2024
• Physicians Advisory - Measles - Sent April 3, 2024
• Physicians Alert - Measles - Sent March 5, 2024
• Physicians Advisory - Measles - Sent February 21, 2024
• Physicians Update - Students with Incomplete Immunization Records - Sent January 17, 2024

2023

• Physicians Update - Vaccine Distribution During the Holidays - Sent December 4, 2023
• Physicians Advisory - Chickenpox (Varicella) Testing - Sent November 29, 2023
• Physicians Advisory - Students with Incomplete Immunization Records - Sent November 16, 2023
• Physicians Advisory - Respiratory Syncytial Virus (RSV) - Sent October 30, 2023
• Physicians Update - Ontario Health Respiratory Season Support Material - Sent October 24, 2023
  • Supports-for-the-fall-winter-respiratory-illness-season-2023-10-13
• Physicians Advisory- Fall 2023 Vaccines – COVID-19 Update - Sent October 10, 2023
  • XBB Vaccine Series - Sent October 10, 2023
• Physicians Advisory - Fall 2023 COVID Vaccine - Sent September 25, 2023
  • COVID-19 Vaccine Order Form - Fall 2023
• Physicians Advisory - New Public Health Ontario Test Requisition - Sent September 18, 2023
• Memo - 2023-2024 Universal Influenza Immunization Program - Vaccine Distribution - Sent September 12, 2023
  • 2023-2024 Influenza Vaccine Order Form
• Physicians Advisory - Tickborne Diseases (Lyme Disease, Anaplasmosis, Babesiosis, Powassan Virus Infection) - Sent July 5, 2023
• Physicians Advisory - Local Rabies Risk & Duty to Report - Sent May 26, 2023
• Physicians Alert - Invasive Group A Strep Memo from the Ontario Ministry of Health - Sent May 25, 2023
  • Memo to hospitals and healthcare providers re iGAS
• Physicians Adviosry - Updated HIV Testing Guidelines for Ontario - Sent May 18, 2023
  • Ontario HIV Testing Guidelines for Providers (Page 6)
• Physicians Advisory - Multidrug-Resistant Gonorrhea (MDR-GC) - Sent April 17, 2023
• Physicians Advisory - Highly Pathogenic Avian Influenza (HPAI) H5N1 - Sent April 12, 2023
• Physicians Advisory - Spring 2023 COVID-19 Booster Campaign - Sent April 6, 2023
  • Booster Decision Chart (PDF)
• Physicians Advisory - Extensively drug resistant (XDR) Shigella sonnei - Sent March 20, 2023
• Physicians Alert - Update on Pertussis in the Community - Sent March 7, 2023
• Memo - Vaccine Storage During Severe Weather - Sent February 22, 2023
• Physicians Advisory - Measles Preparedness - Sent February 16, 2023
• Physicians Advisory - Pertussis in the Community - Sent February 10, 2023
• Physicians Update - Recombivax HB dialysis formulation to complete a Hepatitis B (HB) series started with Engerix-B - Sent January 30, 2023
• Physicians Advisory - Students with Incomplete Immunization Records - Sent January 3, 2023
  • Immunization Notice (Word document)
  • Immunization Recommendation (Word document)

2022

• Memo - Vaccine Storage During Severe Weather - Sent December 22, 2022
• Physicians Advisory - COVID-19 Vaccine Updates – Bivalent Booster for Children 5-11; Co-administration Guidance - Sent December 19, 2022
• Physicians Update - Vaccine Delivery During the Holidays - Sent November 28, 2022
• Physicians Advisory - Pertussis Testing and Reporting - Sent November 17, 2022
• Physicians Advisory - Pertussis in the Community - Sent November 16, 2022
• Physicians Advisory - Antiviral and Vaccine Guidance for Influenza and COVID-19 - Sent October 27, 2022
• Physicians Advisory - COVID-19 and Influenza Vaccine Product Ordering - Sent October 24, 2022
  • COVID-19 Clinic Vaccine Order Form (PDF)
• Physicians Advisory - Monkeypox Vaccine Updates - Sent October 17, 2022
• Physicians Advisory - Enterovirus D68 and Acute Flaccid Myelitis - Sent September 30, 2022
• Physicians Advisory - Bivalent Vaccine Eligibility - Sent September 12, 2022
  • Moderna Bivalent Order Form (PDF, 1 page)
• Physicians Update - Memo from Chief Medical Officer of Health regarding recent aconitine poisoning - Sent September 6, 2022
  • CMOH Memo to physicians Aconitine Poisoning 2Sept2022
• Physicians Advisory - COVID-19 Booster Doses – Children 5-11; Bivalent Products - Sent September 2, 2022
• Physicians Advisory - Updates about Pre-Exposure Vaccination for Monkeypox - Sent August 9, 2022
  • Imvamune Vaccine Referral Form (PDF, August 8, 2022)
• Physicians Advisory - Vaccinating Children Under 5 - Sent July 28, 2022
• Physicians Advisory - Moderna Spikevax Pediatric Vaccine available to order - Sent July 27, 2022
• Physicians Advisory - COVID Vaccine Documentation in COVax Lunch and Learn - Sent July 25, 2022
• Physicians Advisory - Expanded Eligibility for COVID-19 Booster Doses (Revised) - Sent July 13, 2022
• Physicians Advisory - Phone & Fax Outage - Sent July 8, 2022
• Physicians Advisory - Pre-Exposure (PrEP) Vaccination for Monkeypox - Sent July 7, 2022
• Physicians Update - New reporting requirements for monkeypox now designated a Disease of Public Health Signficance - Sent June 17, 2022
  • CMOH Memo Monkeypox June 16 2022 IDPP BY
  • Smallpox and other Orthopoxviruses_2022_IDPP
• Physicians Advisory - Monkeypox Updates - Sent June 14, 2022
• Physicians Advisory - Human Monkeypox - Sent May 26, 2022
• Physicians Advisory - Local Rabies Risk & Duty to Report Animal Bites and Incidents - Sent May 19, 2022
• Physicians Advisory - Publicly Funded Tdap and Hepatitis B Immunization Program Expansion - Sent May 12, 2022
  • Tdap Vaccine in Every Pregnancy: Qs & As for Immunizers
  • Tdap (tetanus, diphtheria, pertussis) Vaccine Program Fact Sheet
• Memo (LTC/RH) - COVID-19 Antiviral Medication: Paxlovid (Sent April 27, 2022)
• Physicians Advisory - WDG Public Health Website and Telephone Services unavailable this weekend - Sent April 21, 2022
• Physicians Advisory - COVID-19 Booster Doses – Updates regarding Second Boosters - Sent April 11, 2022
• Physicians Advisory - Highly Pathogenic Avian Influenza H5N1 - Sent April 7, 2022
  • Q&A Avian Influenza April 2022 (Ministry of Health PDF)
• Physicians Advisory - Eligibility for Novavax Nuvaxovid Vaccine - Sent April 4, 2022
• Physicians Advisory - COVID-19 Vaccination Timing for Individuals with Previous COVID-19 Infection - Sent February 17, 2022
• Physicians Advisory - Adolescent Boosters - Sent February 15, 2022
• Physicians Advisory - Students with Incomplete Immunization Records - Sent January 27, 2022
• Physicians Advisory - Subsequent Vaccine Doses for Patients with Myocarditis/Pericarditis following COVID-19 Immunization - Sent January 17, 2022
• Physicians Advisory - Statement of Medical Exemption for COVID-19 Vaccine - Sent January 7, 2022 (Links to forms updated January 26, 2022)
  • Statement of Medical Exemption (PDF Form) (Updated February 17, 2022)
  • Client Information and Consent (PDF Form) (Updated January 26, 2022)
• Physicians Advisory - Work Self-Isolation in Highest-Risk Settings - Sent January 6, 2022

2021

• Physicians Update - COVID-19 Booster Doses – Updated 18+ Eligibility, Dose Interval, and Preferred Product - Sent December 17, 2021
• Physicians Alert - Scaling up Immunizations in response to the Omicron Variant - Sent December 13, 2021
• Physicians Advisory - Vaccine Distribution During the Holidays - Sent December 9, 2021
• Physicians Advisory - COVID-19 Variant of Concern Omicron (B.1.1.529): Case, Contact and Outbreak Management - Sent December 8, 2021
• Physicians Advisory - Updated Guidance for COVID-19 Vaccine Booster Doses and Additional Doses in a Series - Sent December 7, 2021
  • Third Dose or Re-Immunization COVID-19 Vaccine Referral Form (Fillable PDF, Revised December 24, 2021)
• Physicians Advisory - Omicron (B.1.1.529) Variant of Concern - Sent November 29, 2021
• Physicians Advisory - COVID-19 Vaccinations for Children Ages 5-11 - Sent November 18, 2021
• Physicians Advisory - Updated COVID-19 Booster Dose Recommendations - Sent November 4, 2021
• Physicians Advisory - Students with Incomplete Immunization Records - Sent November 3, 2021
• Physicians Advisory - COVID-19 Vaccine Booster Doses - Sent November 1, 2021
• Physicians Advisory - COVID-19 Vaccination Recommendation for Pregnant & Breastfeeding Individuals - Sent October 25, 2021
• Physicians Update - First Case of Influenza, 2021-2022 Season - Sent October 13, 2021
• Physicians Advisory - Co-administration of COVID-19 Vaccines/Use of Pfizer for individuals 18-24 - Sent September 30, 2021
• UPDATE Memo - 2021-22 Universal Influenza Immunization Program - Vaccine Distribution - Sent September 23, 2021
• Memo - 2021-22 Universal Influenza Immunization Program – Vaccine Distribution - Sent September, 17, 2021
  • 2021-22 Influenza Vaccine Order Form (PDF)
• Memo - COVID-19 Vaccine Third Dose Recommendations - Sent by email September 15, 2021
  • COVID-19 Vaccine Third Dose Referral Form (PDF, Revised December 24, 2021)
• Physicians Advisory - Medical Reasons to Not Receive an mRNA COVID-19 Vaccine - Sent August 30, 2021
• Physicians Advisory - Third Dose Recommendations for Immunocompromised Patients - Sent August 18, 2021
• Physicians Advisory - Hepatitis A Infections Linked to Frozen Mango Products - Sent August 6, 2021
  • Revised Post-exposure and other recommendations - July 2021 (Office of the Chief Medical Officer of Health, Public Health)
• Physicians Advisory - Multiplex Respiratory Virus Testing - Sent July 30, 2021
• Physician Advisory - Ontario Rotavirus Immunization Program – Transitioning to Rotarix® - Sent July 27, 2021
  • Updates to the Ontario Rotavirus Immunization Program: Product change to Rotarix® vaccine
• Physicians Advisory - Adverse Effect Following Immunization (AEFI) - Sent July 15, 2021
• Physicians Update - Vaccine Interchangeability & Priority Second Doses - Sent June 2, 2021
• Physicians Advisory - AstraZeneca Update (Second Dose) - Sent May 21, 2021
• Physicians Advisory - AstraZeneca Vaccine Pause - Sent May 12, 2021
• Physician Update - COVID-19 Vaccine Eligibility for Pregnant Individuals - Sent April 22, 2021
  • Vaccine Referral Form (Fillable PDF Form, Updated)
• Physician Update - Recommended Second Dose Intervals - Sent April 22, 2021
• Physician Update - Exception to Extended Dose Intervals for COVID-19 Vaccines - Sent March 30, 2021
  • Vaccine Referral Form (Fillable PDF Form) - Updated May 18, 2021
• Physician Advisory - Pre-registration Process and Booking System - Sent March 16, 2021
• Physician Advisory - Phase Two COVID-19 Vaccine Updates - Sent March 9, 2021
  • AstraZeneca Vaccine Q&A
• Physician Update - Pre-Registration for COVID-19 Vaccination Mass Clinics - Sent February 23, 2021
• Physician Update - Variants of Concern - Sent February 9, 2021
• Physician Update - Local COVID-19 Vaccination Program - Sent January 29, 2021
• Physician Update - COVID-19 Immunization for Special Populations - Sent January 12, 2021
  • WDGPH Attestation for COVID-19 Vaccination - Sent January 12, 2021

2020

• COVID-19 Vaccine Bulletins - Sent December 3, 2020
• COVID-19 Outbreak in Old Order Mennonite Community - Sent November 16, 2020
• COVID-19 in the Old Order Mennonite Community - Sent November 6, 2020
• Grade 7 Immunizations - Sent November 5, 2020
• Revised Clearance Criteria for COVID-19 Positive Patients - Sent October 14, 2020
• 2020-2021 Universal Influenza Immunization Program HD Vaccine Distribution - Sent October 9, 2020
  • 2020 Influenza Vaccine Order Form
• Influenza Vaccine Distribution and Public Health Clinic Details - Sent October 6, 2020
• COVID-19 Testing in Primary Care Offices - Sent October 2, 2020
• Post-vaccination Observation Period for Influenza Vaccination - Sent October 2, 2020
• Herpes Zoster Immunization Program Transition - Sent October 2, 2020
• 2020-21 Universal Influenza Immunization Program during COVID-19 - Sent September 24
  • WDGPH Universal Influenza Immunization Program (2-page handout)
  • 2020-2021 Universal Influenza Immunization Program - Vaccine Distribution (Physicians and Hospitals)
  • 2020-2021 Universal Influenza Immunization Program - Vaccine Distribution (Long-Term Care and Prequalified Retirement Homes)
• Management of Symptomatic Students and Household Contacts - Sent September 16, 2020
• Healthcare provider guidance for COVID-19 testing for children - Sent September 10, 2020
  • Self-Assessment COVID-19 Screening Tool for Children
  • Self- Assessment COVID-19 Daily Screening Tool for Secondary School Students
• Grade 7 Immunizations - Sent June 25, 2020
  • School based vaccine order form
• COVID-19: Testing Update for Facilities - Sent June 3, 2020
• Duty to Report Cases of COVID-19  - Sent June 3, 2020
• COVID-19: Case Definition; Accessing & Managing Results - Sent May 22, 2020
  • Management of positive patients in your practice
• Physicians Update - COVID-19 Surveillance - Sent May 19, 2020
• Physicians Advisory - Providing Immunizations during COVID-19 - Sent April 21, 2020
• Physicians Advisory - Updated COVID-19 Quick Reference Guide - Sent April 18, 2020
  • COVID-19 Quick Reference Public Health Guidance on Testing and Clearance
• Memo - COVID-19: Testing Guidance for Practitioners and Assessment Centres - Sent April 14, 2020
• Physicians Advisory - Updated Guidance for COVID-19 Testing  - Sent April 13, 2020
• Physicians Advisory - Use of procedure/surgical masks within long-term care facilities - Sent April 3, 2020
• Physicians Advisory - Updated PPE Information for Health System Partners - Sent March 30, 2020
• Physicians Advisory - Call Centre Access on Saturday March 28 - Sent March 27, 2020
• Physicians Advisory - COVID-19 Updates: Testing and Case Management - Sent March 27, 2020
  • COVID19 Testing Flowchart
  • CMOH Memo Health Worker Illness and Return to Work
• Physicians Advisory - COVID-19: Alternate Specimen Collection Kits & Physician Services - Sent March 18, 2020
• Physicians Advisory - Interim Testing Recommendations for COVID-19 - Sent March 17, 2020
  • COVID-19 Testing Flowchart
  • Know the difference: self-monitoring, self-isolation, and isolation for COVID-19
• Physicians Advisory - COVID-19 Assessment Centre Opening in Guelph - Sent March 16, 2020
• Physicians Advisory - Updated Case Definition, Guidance for Testing and PPE for COVID-19 (Incl. COVID-19 screening tool) - Sent March 13, 2020
• Physicians Advisory - Changes to Specimen Collection for COVID-19 - Sent March 2, 2020
• Physicians Update - Revised Case Definition for COVID-19 - Sent February 27, 2020
• Physicians Update - Novel Coronavirus (COVID-19) - Sent February 21, 2020
  • Evidence on transmissibility of SARS-CoV-2
• Physicians Advisory - Change to Case Definition for 2019-nCoV and New Home Isolation Requirements - Sent February 8, 2020
• Physicians Advisory - Latest guidance regarding novel coronavirus (2019-nCoV)  - Sent February 6, 2020
• Physicians Advisory - Primary Care Screening for Novel Coronavirus (2019-nCoV) - Sent January 30, 2020
• Physicians Advisory - New Case Definition for Novel Coronavirus (2019-nCoV) - Sent January 29, 2020
• Physicians Advisory - Primary Care Office Infection Control for Novel Coronavirus (2019-nCoV) - Sent January 28, 2020
• Physicians Advisory - Novel Coronavirus (2019-nCoV) from Wuhan, China - Sent January 27, 2020
• Physicians Advisory - Novel Coronavirus (2019-nCoV) from Wuhan, China - Sent January 24, 2020