Infectious Diseases

Infectious diseases are caused by pathogenic microorganisms, such as bacteria, viruses, parasites or fungi. These diseases can spread from the environment or from one person to another resulting in illness in our communities.

We provide public health workers with expertise, support and resources for the prevention and control of infectious diseases.

Find Information On...

Blood Borne Infections

Resources on blood borne infections: viruses that are carried in the blood, specifically hepatitis B, hepatitis C and HIV.

Enteric Diseases and Food-Borne Diseases

Resources on enteric diseases: intestinal illnesses caused by micro-organisms such as viruses, bacteria and parasites.

Respiratory Diseases

Resources on respiratory diseases: infections in the respiratory system that are caused by organisms such as viruses or bacteria.

Sexually Transmitted Infections (STIs)

Resources on STIs: infections caused by micro-organisms such as viruses or bacteria that are transmitted through sexual contact.

Vaccine Preventable Diseases (VPDs)

Resources on preventing and controlling of vaccine-preventable diseases in Ontario.

Vector-Borne and Zoonotic Diseases

Resources on vector-borne and zoonotic diseases: viruses, bacteria or parasites that are transmitted to humans from animals or insects.

Case and Contact Management

PHO supports public health units (PHUs) by providing scientific and technical support to their case and contact management investigations for individuals with DOPHS.

Contact the Department

Health Protection

healthprotection@oahpp.ca

Updated 17 Dec 2019