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A-Z Health Topics lists public health information that's not found in other areas of our website. You'll find a wide variety of topics here, most of which include links to other websites where you can find even more information.

If you think we're missing a topic, you can email us to suggest one by going to our Contact Us page.

Health Topics

A (9) | B (4) | C (15) | D (1) | E (7) | F (3) | G (3) | H (14) | I (6) | L (9) | M (9) | N (1) | O (1) | P (4) | R (4) | S (7) | T (5) | U (2) | V (3) | W (2) | Y (2) | Z (1)
An alphabetical listing of Health Topics.
Title
Fièvre typhoïde

La fièvre typhoïde est une infection causée par une bactérie du nom de Salmonella typhi. Elle est présente généralement dans les pays en développement, où les normes d’hygiène sont peu élevées. Les voyageurs sont exposés à la fièvre typhoïde quand ils s’y rendent.

Fifth Disease

Fifth disease is caused by the virus Parvovirus B19. Symptoms may begin 4 to 20 days after you are exposed to someone who is infected. It's most contagious before the development of the rash.

Flooding

Floods are a common and widespread natural hazard across Canada, causing extensive damage to property and loss of life. Floods can result from heavy rainfall, sewer backups, severe storms, breaking dams, broken water mains, and thawing of snow and ice. Some floods develop slowly, sometimes over a period of days or weeks. However, flash flooding usually occurs with little or no advance warning.

Giardia

Giardia is a parasite that causes an infection in the intestinal track. Symptoms usually start 3 to 25 days after being exposed to the parasite.

Gonorrhea

Gonorrhea is a sexually transmitted bacteria that is spread by sexual contact with an infected person.

Grippe

Qu'est-ce que la grippe? La grippe est une infection respiratoire d'origine virale.

Haemophilus Influenzae Type b (Hib)

Haemophilus Influenzae (Hi) is caused by a bacterial infection. There are many types or “strains” of it. The sickness can be mild or very serious. If the infection gets into the bloodstream, brain, or other areas where it’s usually not found, it can cause severe infection.

Hand, Foot, and Mouth Disease

Hand, foot, and mouth disease is a common viral illness that usually affects infants and children younger than 5 years, but it can occur at any age.

Handwashing Hand Hygiene is the single most important way to control the spread of infection. View the list of steps on how to properly wash and sanitize your hands.
Head Lice

If your child comes home with head lice, you may have a lot of questions.

Heat Illness

For most people, heat-related illnesses happen when temperatures are high for a number of days (particularly if the night time temperatures do not drop), or if the humidity is high. While the health risks related to heat are higher for certain groups (such as seniors, young children, people taking certain medications and people with chronic conditions), everyone is potentially at risk. Fortunately, most heat-related illnesses can be prevented or treated if you are aware of the risks, signs and symptoms.

Hépatite A

L’hépatite A est une infection du foie causée par un virus. La maladie est généralement mineure chez les enfants, mais peut être plus grave chez les adultes.

Hepatitis A

Hepatitis A (Hep A) is an infection of the liver, caused by the hepatitis A virus.

Hepatitis B

Hepatitis B is a virus that can permanently damage your liver and is a leading cause of liver cancer. There is no cure for hepatitis B, and it can sometimes lead to death.

Hepatitis B Immunization Program for Grade 7 Students

Anyone of any age can get the hepatitis B vaccine. People of certain high risk categories are able to receive the provincially funded vaccine through our Health Unit.

Hepatitis B Vaccine

Anyone of any age can get the hepatitis B vaccine. People of certain high risk categories are able to receive the provincially funded vaccine through our Health Unit.

Hepatitis C

Hepatitis C is a virus that you can get from contact with an infected person’s blood.

HIV (AIDS)

HIV (Human Immunodeficiency Virus) is the virus that causes Acquired Immune Deficiency Syndrome (AIDS).

Human Papillomavirus (HPV)

HPV is a very common virus that can cause many types of cancers, including cervical, penile, and anal cancer, and genital warts.

Human Papillomavirus (HPV) Vaccine

Females aged 9 to 45 years old and males aged 9 to 26 years old should get the HPV vaccine. The provincial government is funding the voluntary HPV vaccination program for all grade 7 males and females in Ontario. This means that all males and females starting in grade 7 can get the vaccine free from the Health Unit.

Impetigo

Impetigo is a highly contagious skin infection caused by bacteria called group A streptococcal (strep) or Staphylococcus aureus (staph). The infection happens when the bacteria get into scrapes and insect bites.

Indoor Tanning

Tanning can cause cancer. Sun lamps or tanning beds, just like the sun, give off ultraviolet radiation (UVR), a cancer-causing substance that causes harm to the eyes, early aging of the skin, wrinkling, and skin cancer.

Infection Prevention: Tips to Avoid Getting Sick

Follow these tips to help avoid getting sick!

Influenza (Flu)

Influenza (the flu) is a respiratory infection caused by the influenza virus. The flu season (when most people get sick with the flu) often begins in late fall.

Invasive Meningococcal Disease

Invasive meningococcal disease (IMD) is a serious infection caused by the bacteria, Neisseria meningitidis.  Up to 10% of the population carry the bacteria at the back of their throat or nose without ever getting sick.

Invasive Pneumococcal Disease

Invasive pneumococcal disease is a sudden and serious illness caused by a bacteria called streptococcus pneumonia.

La brucellose

La brucellose est une infection causée par la bactérie Brucella, que l’on trouve surtout chez les bovins, les cochons, les chèvres et les moutons.

La prévention des infections: conseils pour éviter de tomber malade

Voici quelques conseils pratiques pour éviter de tomber malade.

La salmonellose

Qu'est-ce que la salmonellose? La salmonellose est une taxi-infection alimentaire causée par la germe Salmonella.

Le botulisme

Le botulisme, c’est une infection rare causée par la bactérie Clostridium botulinum. Cette bactérie produit une toxine (poison) qui attaque le système nerveux et peut causer la paralysie.

Lead in Drinking Water

Lead is a toxic metal that is found naturally in the air, soil, and water. It is also used in mining, manufacturing, and burning of fossil fuels. The amount of lead Canadians are exposed to has decreased since the 1970s, mainly due to the removal of lead in gasoline, paint, and solder in food cans (Government of Canada, 2013).

Lead in Schools, Private Schools and Child Care Centres

Ministry of Environment and Climate Change (MOECC) under the Ontario Regulation 243/07 requires all schools, private schools and child care centres to sample and test drinking water to measure the concentration of lead against the provincial drinking water guidelines for lead.

Les Tiques et la Maladie de Lyme

La tique est apparentée à l’araignée; elle se déplace lentement au sol et ne vole pas. On trouve des tiques de différentes tailles et de différentes couleurs. Les tiques sont très petites (de 1 à 5 mm) quand elles n’ont pas mangé; après avoir mangé, la femelle grossit et change de couleur. Avant de manger, elles sont environ de la taille d’une graine de sésame. Une fois gorgées de sang, elles peuvent atteindre la taille d’un raisin.

Listeriosis

Listeria is a bacteria that can cause a rare but serious illness called listeriosis. Those who are pregnant, the elderly, and those with a weakened immune system have a higher risk of becoming seriously ill.

L’amibiase

L’amibiase est une infection intestinale causée par un parasite qui vit dans les matières fécales des personnes infectées.

Maladie du charbon (anthrax)

La maladie du charbon, ou anthrax en anglais, est une maladie infectieuse causée par la bactérie Bacillus anthracis. Cette bactérie, qui se retrouve surtout chez les animaux, peut produire de minuscules spores invisibles (microorganismes) pouvant survivre longtemps dans le sol. La maladie du charbon est rare, mais elle peut infecter les humains s’ils ont des contacts avec des animaux infectés ou des produits d’animaux contaminés.