Infectious Diseases - Statistics in Niagara

Infectious diseases can be spread from one person to another, directly or indirectly, through fluid exchange, exposure to vectors, or from the environment. Niagara Region Public Health receives information about and follows up all reportable diseases as identified in Ontario Regulation 559/91 and under the Ontario Health Protection and Promotion Act.

This section contains incidence data for Niagara region related to select infectious diseases.

For more information, see infectious disease trends in Ontario.

Direct contact and respiratory infections Top of Page

Infectious diseases that can be spread by touching people or objects that have germs on them and diseases that can be spread from a sick person's cough or sneeze.

Diseases Number of cases Jan. - March 2024 Number of cases April - June 2024 Number of cases July - Sept. 2024 Number of cases Oct. - Dec. 2024 Year-to-Date 2024Comparison to 3-Year Average in Niagara
Acute Flaccid Paralysis 0       0 ⇔
COVID-19 665       665 Not applicable
Encephalitis / Meningitis <5       <5 ⇔
Group A Streptococcal disease, invasive 19       19 ⇔
Group B Streptococcal disease, neonatal 0       0 ⇔
Influenza A, laboratory confirmed 619       619 ⇧
Influenza B, laboratory confirmed 201       201 ⇧
Legionellosis 0       0 ⇔
Meningococcal Disease, invasive <5       <5 ⇧
Tuberculosis, active <5       <5 ⇔

Source: Integrated Public Health Information System [2024].

3-year average based on 2021-2023 data, rounded to nearest whole number

All reportable disease data are stored in and retrieved from the provincially mandated Integrated Public Health Information System (iPHIS) and the Case and Contact Management System (CCM) for COVID-19 cases. Only confirmed cases are provided.

Infectious disease data may be underreported due to testing availability, case and contact management guidelines and delays in data entry.

Food, waterborne and enteric infections Top of Page

Infectious diseases that can be spread by eating or drinking contaminated food or water and not cleaning your hands.

Diseases Number of cases Jan. - March 2024 Number of cases April - June 2024 Number of cases July - Sept. 2024 Number of cases Oct. - Dec. 2024 Year-to-Date 2024Comparison to 3-Year Average in Niagara
Amebiasis <5       <5 ⇔
Campylobacter Enteritis 14       14 ⇔
Cryptosporidiosis <5       <5 ⇔
Cyclosporiasis <5       <5 ⇔
Giardiasis <5       <5 ⇔
Hepatitis A 0       0 ⇔
Listeriosis 0       0 ⇔
Paratyphoid Fever 0       0 ⇔
Salmonellosis 21       21 ⇔
Shigellosis <5       <5 ⇔
Typhoid fever 0       0 ⇔
Trichinosis 0       0 ⇔
Verotoxin-Producing E. coli Including HUS) <5       <5 ⇧
Yersiniosis <5       <5 ⇔

Source: Integrated Public Health Information System [2024].

3-year average based on 2021-2023 data, rounded to nearest whole number

All reportable disease data are stored in and retrieved from the provincially mandated Integrated Public Health Information System. Only confirmed cases are provided.

Infectious disease data may be underreported due to testing availability, case and contact management guidelines and delays in data entry.

Sexually transmitted and bloodborne infections Top of Page

Infections that can be spread through sexual contact and exposure to infected fluids, such as semen, vaginal fluid and blood.

Diseases Number of cases Jan. - March 2024 Number of cases April - June 2024 Number of cases July - Sept. 2024 Number of cases Oct. - Dec. 2024 Year-to-Date 2024Comparison to 3-Year Average in Niagara
AIDS 0       0 ⇔
HIV 18       18 ⇔
Chlamydia 348       348 ⇔
Gonorrhea 56       56 ⇔
Hepatitis C 29       29 ⇔
Syphilis 44       44 ⇔

Source: Integrated Public Health Information System [2024].

3-year average based on 2021-2023 data, rounded to nearest whole number

All reportable disease data are stored in and retrieved from the provincially mandated Integrated Public Health Information System. Only confirmed cases are provided.

Infectious disease data may be underreported due to testing availability, case and contact management guidelines and delays in data entry.

Vaccine preventable infections Top of Page

Infectious diseases that can be controlled and/or avoided by getting recommended immunizations.

Diseases Number of cases Jan. - March 2024 Number of cases April - June 2024 Number of cases July - Sept. 2024 Number of cases Oct. - Dec. 2024 Year-to-Date 2024Comparison to 3-Year Average in Niagara
Hepatitis B 0       0 ⇔
Diphtheria 0       0 ⇔
Chickenpox (Varicella) <5       <5 ⇔
Measles 0       0 ⇔
Mumps 0       0 ⇔
Pertussis (Whooping Cough) 0       0 ⇔
Rubella 0       0 ⇔
Streptococcus pneumoniae, invasive 20       20 ⇧
Tetanus 0       0 ⇔

Source: Integrated Public Health Information System [2024].

3-year average based on 2021-2023 data, rounded to nearest whole number

All reportable disease data are stored in and retrieved from the provincially mandated Integrated Public Health Information System. Only confirmed cases are provided.

Infectious disease data may be underreported due to testing availability, case and contact management guidelines and delays in data entry.

Vectorborne and zoonotic infections Top of Page

Infectious diseases that can be spread from infected insects or animals.

Diseases Number of cases Jan. - March 2024 Number of cases April - June 2024 Number of cases July - Sept. 2024 Number of cases Oct. - Dec. 2024 Year-to-Date 2024Comparison to 3-Year Average in Niagara
Brucellosis 0       0 ⇔ 
Lyme <5       <5 ⇔
West Nile Virus 0       0 ⇔

Source: Integrated Public Health Information System [2024].

3-year average based on 2021-2023 data, rounded to nearest whole number

All reportable disease data are stored in and retrieved from the provincially mandated Integrated Public Health Information System. Only confirmed cases are provided.

Infectious disease data may be underreported due to testing availability, case and contact management guidelines and delays in data entry.

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