Public Health Alerts

Increased Incidence of Anaplasmosis in Ontario, 2025

To: Ottawa Physicians and Nurse Practitioners
Date: September 16, 2025
From: Dr. Emil Prikryl, Associate Medical Officer of Health
Subject: Increased Incidence of Anaplasmosis in Ontario, 2025

Dear Colleagues,

A recent report of a death in an Ottawa resident caused by anaplasmosis serves as a reminder that we remain very much in the season for tick-borne diseases such as anaplasmosis, Lyme disease, babesiosis, and Powassan virus, as well as mosquito-borne diseases such as West Nile virus. There have been 34...

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Information on Ontario's RSV Prevention Programs

To: Ottawa Physicians, Nurse Practitioners, and Midwives
Date: September 15, 2025
From: Dr. Laura Bourns, Deputy Medical Officer of Health
Subject: Information on Ontario’s RSV prevention programs

Dear Colleagues,

The below communication provides information on Respiratory Syncytial Virus (RSV) prevention programs the 2025-2026 RSV season for:

1. high-risk older adults, and
2. infants and high-risk children

Please note: The RSV product order forms will be available at ottawapublichealth.ca/hcp later this month.  A...

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Discontinuation of Provincial COVID-19 Test Results Viewer

To: Ottawa Physicians
Date: September 2, 2025
From: Dr. Laura Bourns, Deputy Medical Officer of Health
Subject: Discontinuation of Provincial COVID-19 Test Results Viewer

Dear Colleagues,

Please see below a memo from Ontario’s Chief Medical Officer of Health regarding the discontinuation of the provincial COVID-19 Test Results Viewer.

English:

• Discontinuation of the COVID-19 Test Results Viewer – Effective August 29, 2025 (PDF)

French: 

• Abandon du Visualiseur des résultats du dépistage de la COVID-19 –...

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Market Withdrawal of COVID-19 KP.2 vaccines

To: Ottawa Physicians
Date: August 29, 2025
From: Dr. Laura Bourns, Deputy Medical Officer of Health
Subject: Market Withdrawal of COVID-19 KP.2 vaccines

Dear Colleagues,

Please see linked below a memo from Ontario’s Chief Medical Officer of Health regarding the market withdrawal of all Pfizer COVID-19 KP.2 vaccines.  All Moderna COVID-19 KP.2 products have previously reached expiry and are no longer in use.

As required by Health Canada, the Ontario Ministry of Health requires that all Pfizer COVID-19 KP...

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First Ottawa human case of West Nile Virus in 2025

To: Ottawa Physicians and Nurse Practitioners
Date: Aug 27, 2025
From: Dr. Robin Taylor, Associate Medical Officer of Health

Dear Colleagues,

Ottawa Public Health (OPH) is writing to heighten your awareness of the possibility of illness from West Nile virus (WNV) infection in Ottawa, as the first human case of WNV has been reported in an Ottawa resident for the 2025 season.

The main vectors of WNV, Culex pipiens mosquitoes, reproduce and feed around human habitation making people at risk around their...

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