Previous health care provider updates can be found here


COVID-19 Vaccine Guidance Updates


News Release: All Ontarians Aged 12+ Eligible for Bivalent Booster 

With Health Canada approval of the Pfizer bivalent vaccine, everyone aged 12 and over is eligible to get a bivalent COVID-19 booster dose starting Monday, October 17 if they have completed their primary COVID-19 vaccine series. The Ontario government is reminding people to stay up-to-date with their vaccines as we enter respiratory illness season. For the full October 13, 2022 news release, please visit the Ontario Newsroom.


Update: Fluzone High Dose and Fluad Product Supply

Throughout the 2022/2023 flu season, TBDHU expects a disruption in Fluzone High Dose and Fluad product supply. Please note the important information below;

Orders for Fluzone HD or Fluad will be filled with either Fluzone HD or Fluad based on TBDHU supply. Both products are authorized for use in those over 65 years of age. There is no product preference.

If TBDHU does not have Fluzone HD or Fluad at the time of your order, you will be notified and offered to receive Fluzone QIV. It is recommended that individuals over 65 receive the first flu product offered to them and do not delay immunization against flu.

Fluzone HD and Fluad products may be available at local pharmacies. TBDHU cannot comment on pharmacy supply of these products. Clients should call pharmacies to obtain information about supply availability.
TBDHU does not expect disruptions or supply issues with other flu products this flu season (e.g Fluzone QIV).


Important Information Regarding Flu Vaccination in Thunder Bay

Please see below for a list of those who are eligible to receive a flu vaccine at TBDHU COVID Vaccine Clinics:
  • Anyone over the age of 5 who has also come to receive a COVID-19 vaccine, in which case they can receive both vaccines simultaneously; OR
  • Those <5 who do not have a health care provider, along with any family members who are accompanying them.
Flu vaccines will not be available to those who are not receiving a COVID-19 vaccine or who are not children <5 or their accompanying family members. Please direct clients to a local pharmacy or the clinic listings at for other flu vaccination opportunities if you are not vaccinating patients in your practice.


Update on COVID-19 and Flu Vaccination in District Communities

TBDHU is now offering opportunistic flu vaccines to those over the age of 5 who are visiting a TBDHU clinic for a COVID vaccination in District communities. The schedule for these clinics is posted on our website.


COVID-19 Vaccine Expiration Dates

Pfizer products no longer have the expiration date printed on the vials/boxes. Please expect, going forward, that all Pfizer products will only list the manufactured date on all products. The product expiration date is 12-months from the manufactured date. Please see Information on Expiry Dates for further details and visit for the most up to date information.

Please note that Moderna products will continue to note the expiration date on the vial.


Imvamune® Guidance Update

Imvamune® guidance has been updated (Monkeypox Vaccine (Imvamune®) Guidance for Health Care Providers (

Eligible individuals can now receive pre-exposure vaccine as a two-dose series, with at least 28 days between first and second doses.

Individuals who received a first dose through TBDHU or any other health unit in Ontario should contact TBDHU (625-5900 or toll-free 1-866-294-6630) to discuss options, including making an appointment for an upcoming clinic.

Individuals who received a first dose outside of Ontario should contact TBDHU (625-5900 or toll-free 1-866-294-6630) to discuss options. Proof of the first dose is required and this can be reviewed with TBDHU staff.


PHO Routine Immunization Updates


Adult Vaccination Advocacy Toolkit Relaunch

Vaccination is one of the most effective public health interventions of our time and a key component of healthy ageing.  Yet globally, uptake rates of adult vaccination are suboptimal.  

The Toolkit is a collection of authoritative and adaptable resources designed around four key policy issues: vaccine pathways, expansion of the pool of vaccine administrators, effective targeted adult vaccination campaigns, and an environment that strives for vaccination equality.

Visit to access the Adult Vaccination Advocacy Toolkit (AVAT). If you have any questions or would like to reach out regarding the AVAT, please contact Ms Mitali Mistry, Project Officer (IFA) at or Dr Jane Barratt, Secretary General (IFA) at


WEBINAR: Reaching the undiagnosed: Advances in hepatitis C testing 

Presented in partnership by: Canada’s Source for HIV and Hepatitis C Information (CATIE) & Canadian Network on Hepatitis C (CanHepC)

This webinar will provide an overview of the Canadian landscape of hepatitis C testing, available testing technologies, approaches with different populations, and opportunities and gaps in our testing strategies. With frontline service providers, we will discuss testing strategies to help reach the undiagnosed.

November 23, 2022
12:00 p.m. – 1:30 p.m. EST
Register Here



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Thunder Bay District Health Unit · 999 Balmoral Street · Thunder Bay, On P7B 6E7 · Canada