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Year
Location
Water Sample Date
Date BGA Identified
2024
Marie Louise Lake
September 21, 2024
October 8, 2024
McKenzie Beach Avenue (Shuniah)
August 27, 202
August 29, 2024
Two Island Lake
August 22, 2024…
Blue-green algae (BGA) are microscopic organisms found naturally in lakes and streams. They are usually found in low numbers but can rapidly increase in warm, shallow, surface water that receives a lot of sun. When this happens, they can form blooms that make the water look like green pea soup or…
COVID-19 Vaccines
Evidence shows that mRNA COVID-19 vaccines are safe for people who are trying to get pregnant, are pregnant or are breastfeeding/chestfeeding. COVID-19 vaccines are recommended, at any stage in pregnancy (including first trimester), as COVID-19 infection during pregnancy can be…
Updated Ontario Ministry of Health Guidance: Recommendations for Outbreak Prevention and Control in Institutions and Congregate Living Settings (February 2025).
This information is intended for Congregate Living Settings (CLS) including but not limited to shelters, group homes and…
UPDATES:
Spring 2025 campaign has launched as of April 2025
INFLUENZA VACCINES – Please visit the dedicated health care provider Influenza web page for more information.
RSV VACCINES - Please see the dedicated health care provider RSV web page for more information.
2024-2025…
For more information on each vaccine, including how to get vaccinated, visit the dedicated web pages listed below. Information for 2025/2026 will be posted on these pages when it is available.
COVID-19
Flu
RSV (protection for infants and high-risk older adults)
Find a pharmacy - Use the…
More information on the 2025/2026 COVID-19 vaccine program, including fall 2025, will be posted here when it is available.
For more information about Ontario's campaign:
COVID-19 - To learn more, visit Ontario.ca/COVID-19
More information will be posted here once it is available for 2025/2026.
Member of a First Nation community in the Thunder Bay District: Please check with your community’s leadership or health care centre for vaccination opportunities.
Eligibility
Spring COVID-19 Campaign:
For…
PLEASE NOTE: This page provides up to date information about active outbreaks within the city of Thunder Bay and the District communities.
An outbreak is declared in a facility when there is a higher than normal rate of respiratory or gastrointestinal symptoms among the residents. The public…
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Date
Contents
July 29, 2025
Adverse Event Following Immunization (AEFI) – Updates to reporting form and fact sheet
World Hepatitis Day 2025
Save the Date: Harm Reduction Conference 2025
WEBINAR RECORDING: Understanding brain…
Our lakes are great places to relax, cool down, and have some family time during the summer. But bacterial infections such as E. coli can put a damper on the fun. Our role is to monitor public beaches within the city and district (with the exception of beaches within provincial parks) and alert…
Beach Notifications
The Thunder Bay District Health Unit will notify the public of any issues concerning beaches tested by the Health Unit.
Beach advisories will be issued in beaches outside of Thunder Bay (with the exception of private beaches and provincial parks) when recreational water…
August 23, 2019 - The Ministry of the Environment, Conservation and Parks has confirmed the presence of blue-green algae in Hawkeye Lake. The MECP continues to investigate whether the blue-green algae identified is a toxin-producing strain. When blue-green algae is present in water, it is important…
August 28, 2019 - The Ministry of the Environment, Conservation and Parks has informed the Health Unit that the toxin analysis of the blue-green algae bloom on Hawkeye Lake has shown that toxins were not present in the sample. Note that this result reflects the water conditions when the lake was…