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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
expand_moreMake A Plan
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…
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…
Our school nurses work with elementary, high school and post-secondary institutions throughout the district to provide nursing services and assist with health programming. Our strategies and initiatives are related, but not limited, to the Ministry of Education’s Foundations for a Healthy…
If you smoke or vape, your lungs could be more susceptible to a respiratory illness, such as COVID-19. People who smoke or vape are more likely to have pre-existing conditions, a compromised immune system and poorer lung health. As a result, they are more susceptible to contracting the virus…
June 7, 2020 - Thunder Bay District Health Unit (TBDHU) is reporting 1 (one) new case of COVID-19 in residents in the TBDHU Region.
For information about the status of COVID-19 in the Thunder Bay District Health Unit area, please visit Current COVID-19 Data in TBDHU.
Details of…
August 27, 2020 - Thunder Bay District Health Unit (TBDHU) has been advised that a recent positive test on a TBDHU area resident was incorrect due to a technical issue at the lab that analyzed the test. This lab is in southern Ontario and not one of the labs in our area.
Repeat analysis of the…
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…
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…