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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.

The effects of pesticides (including herbicides, fungicides and insecticides) on human health are complex and not completely understood. However, there are clear links between pesticide use and illness. The Thunder Bay District Health Unit’s role is to provide recommendations and information about…

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…

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Background

Public health inspectors from the Thunder Bay District Health Unit visit personal service settings to make sure operators are meeting the minimum requirements under Ontario law; Ontario Regulation 136/18: Personal…

West Nile Virus is transmitted, or spread, to humans through a bite from an infected mosquito.

TBDHU has been monitoring the local mosquito population for many years to identify any risk. This is done by trapping mosquitos and testing them. To date, West Nile Virus is not endemic in our area and…

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…

Bed bugs are insects with oval-shaped bodies and no wings. Unlike most public health pests, bed bugs are not known to transmit or spread disease. However, they are certainly a pest - feeding on blood, causing itchy bites and generally irritating their human hosts and they can cause other…

Rodents and insects can be a big problem for both homeowners and business owners. The Thunder Bay District Health Unit provides information about prevention and control, and public health inspectors inspect businesses in the District – particularly restaurants and food vendors – for signs of pests…

Ticks are Present in Thunder Bay and District
The percentage of blacklegged ticks In the City of Thunder Bay area infected with Borrelia burgdorferi (the causative agent of lyme Disease) is greater than 40% as of 2023.
 
The City of Thunder Bay and immediately surrounding area are…

We all love sunny days, but the sun can be damaging to our health without the proper precautions. Holes in the Earth’s natural defence against ultraviolet (UV) rays – the ozone layer – have left us at an even higher risk for skin cancer.

The role of the Thunder Bay District Health Unit is to raise…

The tools used in body art services (including tattoos, body piercing and micro-pigmentation – also known as “permanent makeup”) and salon services (including manicures and pedicures) often come into contact with blood and other bodily fluids. This increases the risk for transmitting serious…

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…