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The Thunder Bay District Health Unit provides information on a large number of infectious diseases. Diseases are listed from A-Z  below for your convenience.

Emergency Preparedness

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Take time to consider what you will do if you or a family/household member becomes sick and needs care.
If you are responsible for dependents, including young children or elderly relatives, consider putting in place alternative care plans should you…

Regular testing of your private well is important to make sure your water is safe for you and your family to drink. Bacteria such as E. coli can contaminate your well making it unsafe to drink. The risk is higher if you have animals in the area – especially on farms with livestock and other animals…

Like public beaches, pools and other artificial recreational waters are great places to have fun and cool off in the summer. However, they can also be a breeding ground for recreational waterborne illnesses (RWIs), including a wide variety of infections such as gastrointestinal, skin, ear,…

Under the Child Care and Early Years Act, all children attending a licensed child care centre (daycare) must be immunized as required by the local Medical Officer of Health (MOH). The operator of the licensed facility has a legal obligation to make sure that all the children in their care are…

We all deserve safe drinking water. One of the Thunder Bay District Health Unit’s role is to prevent and reduce water-borne illness related to drinking water. The TBDHU does this in a number of ways, including:


Surveillance and inspection of drinking water systems;
Timely response to drinking…

Adverse Events Following Immunization

An adverse event following immunization (AEFI) is an unwanted or unexpected health outcome that happens after someone receives a vaccine, which may or may not be caused by the vaccine. Although rare, AEFI’s can occur. Potential AEFI side effects and management…

The Thunder Bay District Health Unit provides a variety of resources and services for health-care workers, educators and employers. In this section, you can access useful information about common public health topics such as communicable disease reporting, immunization, general health…

Home. It’s where we should feel most safe – and part of the Thunder Bay District Health Unit’s role is to help you keep it that way. Possible health hazards in your home such as those listed below are either preventable or can be planned for. Whether you are a homeowner or a tenant, all it takes is…

To ensure the efficacy of vaccines, the cold chain must be maintained according to Ontario's Vaccine Storage and Handling Guidelines (PDF).
Call 625-8810 or toll-free at 1-888-294-6630, ext. 8810 with questions.

expand_moreVaccine Transport


Temperature log books must be submitted with the…

As of August 2024, the following organizations offer TB Skin Testing (TST). Please contact the facility regarding their hours of operation.

PLEASE CONTACT THE FACILITY REGARDING THEIR HOURS OF OPERATION AND THE COSTS ASSOCIATED WITH THIS TEST.

Open to the Public

The following table includes…

Publicly funded vaccines are available from TBDHU at no cost to eligible health care providers, if the facility meets specific criteria to ensure safe handling and storage of vaccines.
These criteria can be reviewed with TBDHU staff by calling 807-625-5900 in Thunder Bay, your local branch…

COVaxON is the electronic documentation system that must be used for documenting all COVID-19 vaccinations in Ontario. Users must be created and “on-boarded” to the system. TBDHU is an authorizing organization or “AO” for creating new user accounts or reactivating previous accounts.
If you…


October 2024 Updates
Please see the sections/tabs below for important information and updates related to the distribution and administration of publicly funded vaccines including:

guidance for fall 2024 vaccines

Influenza
COVID-19
RSV


updated vaccine order and reporting forms (September 2024)…

2024-2025 RSV Program
UPDATES
Beyfortus® (Nirsevimab) Guidance for Health Care Providers document was updated (October) and the section below was updated with this new link
Please see below for more information on the 2024-2025 Respiratory Syncytial Virus (RSV) program.

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