Coronaviruses are a large family of viruses. Some cause illness in people and others cause illness in animals. Human coronaviruses are common and are typically associated with mild illnesses, similar to the common cold. COVID-19 is a new disease that has not been previously identified in humans. Rarely, animal coronaviruses can infect people, and more rarely, these can then spread from person to person through close contact. There have been 2 other specific coronaviruses that have spread from animals to humans and which have caused severe illness in humans. These are the:
Those who are infected with COVID-19 may have little to no symptoms. You may not know you have symptoms of COVID-19 because they are similar to a cold or flu. Symptoms may take up to 14 days to appear after exposure to COVID-19. This is the longest known incubation period for this disease. We are currently investigating if the virus can be transmitted to others if someone is not showing symptoms. While experts believe that it is possible, it is considered less common. Symptoms have included: cough fever difficulty breathing pneumonia in both lungs In severe cases, infection can lead to death.
If you are showing symptoms of COVID-19, reduce your contact with others: isolate yourself at home for 14 days to avoid spreading it to others if you live with others, stay in a separate room or keep a 2-metre distance visit a health care professional or call your local public health authority call ahead to tell them your symptoms and follow their instructions If you become sick while travelling back to Canada: inform the flight attendant or a Canadian border services officer advise a Canada border services agent on arrival in Canada if you believe you were exposed to someone who was sick with COVID-19, even if you do not have symptoms this is required under the Quarantine Act the Canada border services agent will provide instructions for you to follow