The Ontario Health Protection and Promotion Act lists approximately 70 infectious and communicable diseases that must be reported to local public health units. These are referred to as Diseases of Public Health Significance (DOPHS). This dashboard provides case counts and rates for all DOPHS reported to Renfrew County and District Health Unit (RCDHU) over the past 10 years (2015-2024). Annual rate comparisons with Ontario overall are also included. In this dashboard, DOPHS are classified into the following disease categories:
- Enteric Disease and Food-Borne Disease
- Respiratory Disease
- Sexually Transmitted Infections (STIs) and Blood-Borne Infections (BBIs)
- Vaccine Preventable Disease
- Vectorborne Disease
- Zoonotic Disease
- Other Disease
This dashboard was created for local health care providers, community partners, and the public to enhance understanding of local infectious disease trends and to support evidence-informed decision making related to infectious disease.
Technical Notes
Date dashboard last updated: November 3, 2025
Data source for COVID-19 cases: The methodology and data source for counting COVID-19 cases has changed over time. Case data from January 1, 2020 to June 1, 2024 was obtained from the provincial Case and Contact Management (CCM) system which captured cases meeting the provincial case definition. Case data from June 2, 2024 onward is obtained from the Ontario Laboratories Information System (OLIS) dataset which captures laboratory testing data. Annual data includes cases reported January 1-December 31 of a given year, with the exception of 2024 data which includes cases December 31, 2023-December 28, 2024.
Data source for all other DOPHS cases: Integrated Public Health Information System (iPHIS) accessed through Infectious Diseases Query, Public Health Ontario (PHO). Updated October 8, 2025. Data extracted by Renfrew County and District Health Unit October 15, 2025.
Data sources are dynamic reporting systems which allow ongoing updates to data previously entered. As a result, data extracted from these data sources represent a snap shot at the time of extraction and may differ from previous or subsequent reports. The data are intended to provide information on emerging trends in diseases of public health significance but are considered preliminary pending verification. Use with caution.
Case counts presented in this tool include only the confirmed classification for all diseases, except for the following diseases where both confirmed and probable cases are included in the total counts: amebiasis, Lyme disease, mumps, pertussis, invasive meningococcal disease, invasive Haemophilus influenzae disease, and West Nile virus illness.
Case classifications and disease-specific information are specified in the provincial surveillance case definitions outlined in Appendix 1 of the Infectious Diseases Protocol: https://www.ontario.ca/page/ontario-public-health-standards-requirements-programs-services-and-accountability. Cases are reported based on ‘episode date’, with the exception of CPE, HIV, AIDS and Tuberculosis (TB). The episode date is an estimate of the onset date of disease for a case.
Complete 10-year historic data is not available for the following diseases because the disease became reportable at some point between 2015-2024: Blastomycosis (May 1, 2018), Carbapenemase-producing Enterobacteriaceae (CPE) (May 1, 2018), Echinococcus multilocularis infection (May 1, 2018), COVID-19 (January 22, 2020), Mpox (June 16, 2022), Anaplasmosis (July 1, 2023), Babesiosis (July 1, 2023), Powassan Virus (July 1, 2023).
Due to the impact of the COVID-19 pandemic on testing and reporting of diseases of public health significance in Ontario, interpret data for 2020 through 2023 with caution.