Influenza (seasonal)
Seasonal Influenza
View/download 2009 posters and other resources here.Seasonal influenza, commonly known as the flu, is an infection in the airways caused by the influenza virus. It’s called 'seasonal' influenza because the virus circulates annually in the winter season in Canada. In addition to seasonal influenza, you have probably heard about avian influenza and pandemic influenza.
In May 2009, the World Health Organization (WHO)
declared a pandemic of H1N1 influenza (human swine flu). This influenza is
not
the same as seasonal influenza, though its symptoms are similar. It therefore
requires a separate vaccine. To
learn more about the risks and differences between the two types of influenza,
speak to your healthcare provider or visit the Public Health Agency's website, www.fightflu.ca.
Seasonal influenza is a contagious respiratory illness caused by the influenza virus. It is easily caught and easily spread. Influenza typically starts with a headache, chills and cough, followed rapidly by fever, loss of appetite, muscle aches and fatigue, running nose, sneezing, watery eyes and throat irritation. Nausea, vomiting and diarrhea may also occur, especially in children.
Influenza also lowers the body's ability to fight off other infections which can lead to pneumonia, bronchitis or other complications. In addition, influenza can worsen a current medical condition such as diabetes, lung disease, heart disease, kidney disease or cancer. Between 4000 and 8000 Canadians can die of influenza and its complications annually, depending on the severity of the season.
Influenza Bulletin # 1: Influenza vaccine safety
Influenza Bulletin # 2: Why should I get a flu shot?
Influenza Bulletin # 3: Seniors & the flu shot
Influenza Bulletin # 4: Influenza & pregnancy