How well does the vaccine work?
- Protection develops 2 weeks after you get the vaccine and lasts up to 6 months.
- Immunization prevents illness in 70-90% of healthy children and adults. Those who are immunized and get influenza usually have milder symptoms.
- Studies show that healthy working adults who get the vaccine have fewer lost work days and visits to their healthcare provider.
What is in the vaccine?
- There are no live viruses in the injectable vaccine. You can’t get the disease from the vaccine.
- The live nasal spray vaccine has live virus in it. The live virus has been weakened and changed so it is unlikely to cause disease.
- Some types of influenza vaccines have a very small amount of thimerosal in them.
When is the vaccine given?
- Influenza season usually lasts from October to the end of March. The best time to be immunized is in October or November, although it’s never too late in the year to get immunized.
- In Alberta, influenza vaccine is available to everyone over 6 months old at no cost.
What are the risks with immunization?
- Side effects are usually mild and don’t last long.
- Influenza vaccines are very safe.
- It is safe to get the injectable influenza vaccine when you are pregnant and the live or injectable influenza vaccine when you are breastfeeding.
- Most people don’t have any reaction to the vaccine. Some people may have mild reactions such as soreness, redness or swelling where the needle was given or a runny or stuffy nose after receiving the live nasal spray vaccine.
- As with any vaccine, unexpected or unusual reactions can happen. Severe allergic reactions are very rare.