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.

Disease Number of Cases 2021 Year-to-Date 2021 Comparison to 3-Year Average in Niagara
Jan. - March April - June July - Sept. Oct. - Dec.
Acute Flaccid Paralysis 0 0 - - 0
COVID-19 5,355 6,125  - 11,480 Not applicable
Encephalitis / Meningitis <5 0 - - <5 
Group A Streptococcal disease, invasive 9 12 - 21 
Group B Streptococcal disease, neonatal <5 0 -  - <5
Influenza A, laboratory confirmed 0 0 -  - 0  
Influenza B, laboratory confirmed 0 0 -  - 0  
Legionellosis 0 0 - -
Meningococcal Disease, invasive 0 0 - - 0  
Tuberculosis, active 0 <5 - - <5

Source: Integrated Public Health Information System [2021].

3-year average based on 2017-2019 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 confirmd cases are provided.

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.

Disease Number of Cases 2021 Year-to-Date 2021 Comparison to 3-Year Average in Niagara
Jan. - March April - June July - Sept. Oct. - Dec.
Amebiasis 0 0 -  - 0
Campylobacter Enteritis 6 17 - - 23
Cryptosporidiosis <5 <5 - - <5
Cyclosporiasis 0 <5 -  - <5
Giardiasis 0 <5 -  - <5
Hepatitis A 0 0 - - 0
Listeriosis 0 0 - - 0
Paratyphoid Fever 0 0 -  - 0
Salmonellosis 5 7 - - 12
Shigellosis <5 0 - - <5
Typhoid fever 0 <5 -  - <5
Trichinosis 0 0 -  - 0
Verotoxin-Producing E. coli Including HUS) 0 <5 - - <5  
Yersiniosis 5 <5 - - 8

Source: Integrated Public Health Information System [2021].

3-year average based on 2017-2019 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 confirmd cases are provided.

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.

Disease Number of Cases 2021 Year-to-Date 2021 Comparison to 3-Year Average in Niagara
Jan. - March April - June July - Sept. Oct. - Dec.
AIDS 0 0 - - 0
HIV <5 <5 - - 6
Chlamydia 261 295 - - 556
Gonorrhea 91 84 - 175
Hepatitis C 54 50   - 104
Syphilis 27 36 63

Source: Integrated Public Health Information System [2021].

3-year average based on 2017-2019 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 confirmd cases are provided.

Vaccine preventable infections Top of Page

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

Disease Number of Cases 2021 Year-to-Date 2021 Comparison to 3-Year Average in Niagara
Jan. - March April - June July - Sept. Oct. - Dec.
Hepatitis B <5 <5 - - 5
Diphtheria 0 0 -  - 0
Chickenpox (Varicella) 0 <5 - - <5
Measles 0 0 -  - 0
Mumps 0 0 - 0
Pertussis (Whooping Cough) 0 0 -  - 0
Rubella 0 0 -  - 0
Streptococcus pneumoniae, invasive <5 8 -  - 12
Tetanus 0 0 - - 0

Source: Integrated Public Health Information System [2021].

3-year average based on 2017-2019 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 confirmd cases are provided.

Vectorborne and zoonotic infections Top of Page

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

Disease Number of Cases 2021 Year-to-Date 2021 Comparison to 3-Year Average in Niagara
Jan. - March April - June July - Sept. Oct. - Dec.
Brucellosis 0 0 - - 0  
Lyme 0 13 - - 13
West Nile Virus 0 0 -  - 0

Source: Integrated Public Health Information System [2021].

3-year average based on 2017-2019 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 confirmd cases are provided.

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