1. World Health Organization (WHO). Statement on the fifteenth meeting of the IHR (2005) Emergency Committee on the COVID-19 pandemic. Updated May 5, 2023. Accessed October 2, 2023.
2. National Advisory Committee on Immunization (NACI). An Advisory Committee Statement (ACS). Addendum on the guidance on the use of COVID-19 vaccines in the fall of 2023. September 12, 2023. https://www.canada.ca/content/dam/phac-aspc/documents/services/publications/vaccines-immunization/national-advisory-committee-immunization-addendum-guidance-use-covid-19-vaccines-fall-2023/statement.pdf. Accessed September 14, 2023.
3. Government of Canada. COVID-19 signs, symptoms and severity of disease: a clinician guide. Updated June 1, 2022. https://www.canada.ca/en/public-health/services/diseases/2019-novel-coronavirus-infection/guidance-documents/signs-symptoms-severity.html#a3. Accessed September 14, 2023.
4. Coronavirus Disease-2019 in the Immunocompromised Host;Clin Chest Med,2023
5. Public Health Agency of Canada. Canadian Immunization Guide. COVID-19 vaccines. https://www.canada.ca/en/public-health/services/publications/healthy-living/canadian-immunization-guide-part-4-active-vaccines/page-26-covid-19-vaccine.html. Updated September 12, 2023. Accessed September 14, 2023.