Information, tools and facts about symptoms, risks and how to prevent, treat and manage common diseases and illnesses that affect Canadians.


Asthma is a chronic lung disease that can be fatal. With the right information, treatment and support, most people with asthma can control their symptoms and lead active, healthy lives.

Autism Spectrum Disorders (ASD)

Autism Spectrum Disorder (ASD) is a term used to describe a group of developmental disorders that include Autism, Asperger Syndrome, Pervasive Developmental Disorders (PDD), Rett's disorder and Childhood Disintegrative Disorder (CDD).

The Canadian Diabetes Risk Questionnaire

The Canadian Diabetes Risk Questionnaire will help you to find out if you are at higher risk of having pre-diabetes or type 2 diabetes. Knowing your risk can help you to make healthy choices now that will reduce your risk or even prevent you from developing diabetes.

C. difficile (Clostridium difficile)

Clostridium difficile, commonly called C. difficile, is a bacterium that causes diarrhea and other serious intestinal conditions. It is the most common cause of infectious diarrhea in hospitalized patients in the industrialized world.


Dementia is a serious challenge faced by Canada's aging population and affects health care systems in this country and around the world.Learn about dementia and how the Government of Canada is helping those who live with the disease.

Ebola virus disease

Ebola virus disease (EVD) is a severe disease that causes haemorrhagic fever in humans and animals.

Flesh-eating disease

Flesh-eating disease is the common name for necrotizing fasciitis (nek-roe-tie-zing fah-shee-eye-tis), an infection that works its way rapidly through the layers of tissue (the fascia) that surround muscles.

Flu (influenza)

Learn about flu symptoms and resources, as well as how to manage the flu. Also get the facts about the flu shot, and how to find a clinic near you.


HIV is a virus that attacks the immune system, resulting in a chronic, progressive illness that leaves people vulnerable to infections. When the body can no longer fight infection, the disease has progressed to become AIDS.

Heart Disease - Heart Health

Heart disease is still one of the leading causes of death for Canadian men and women. You can reduce your risk of developing heart disease by understanding the risk factors that cause it, and by making the necessary changes to your lifestyle.

Hepatitis C

Hepatitis C is a chronic liver disease caused by the hepatitis C virus (HCV). Because many people do not have symptoms when they are infected, it is important for those at risk to take action to avoid infecting others.


Help your children maintain proper hygiene to stay healthy and prevent unnecessary illness by getting them into the habit of washing their hands frequently and properly. When should kids (and grownups) wash their hands?

Legionnaires' Disease and Pontiac Fever

Legionellosis is an infection caused by a type of bacteria called Legionella. It can lead to two distinct illnesses: Legionnaires' disease and Pontiac fever. Legionella bacteria are found in stagnant water sources at certain temperatures.

Lyme Disease

Lyme disease is a serious illness caused by the bite of an infected blacklegged tick. Canadians are encouraged to take preventive measures to reduce their risk.


Learn about measles (also known as red measles) causes, symptoms, risks, treatment and prevention. Also find information on surveillance and for health professionals.

Mental illness

Learn about mental illness, its risk factors, symptoms and treatment.

Skin cancer

Skin cancer is the most common of all cancer types. About one third of all new cases of cancer in Canada are skin cancers, and the rate continues to rise. Skin plays a vital role in keeping you healthy.


Even though tuberculosis can be cured with antibiotics, it continues to be a major health problem that kills almost two million people worldwide every year.

Type 2 diabetes

Diabetes is a lifelong condition where either your body does not produce enough insulin, or cannot use the insulin it produces. It is one of the fastest growing diseases in Canada.

West Nile virus

Your chance of being bitten by a mosquito that can spread West Nile virus is small. However, if there are reports of infected mosquitoes in your area, take extra steps to protect yourself from mosquito bites.

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