What is influenza, what are the symptoms and when does flu season start?
Influenza is a viral infection characterised by high fever, dry cough, headache, body aches, muscle pain, often with sore throat and runny nose. The symptoms come on suddenly. The annual flu epidemic of influenza type A and often also of influenza type B often begins in December or January, but occasional cases are sometimes diagnosed earlier. It must be assumed that the onset of the flu epidemic can be anywhere from October to March. It usually takes 2-3 months for the epidemic to pass.
Is the flu dangerous?
The risk of serious influenza complications is highest among the elderly and people with suppressed immune systems, and each year the flu leads to death among senior citizens.
Who is particularly advised to get vaccinated?
- Everyone age 60 and older
- Everyone, both children and adults, who suffer from chronic heart, lung, kidney and liver diseases, diabetes, serious diseases and other immunosuppressive diseases.
- Health care professionals who care for people at risk on a daily basis, such as the groups mentioned above.
- Pregnant women
Those belonging to the above groups receive the vaccine free of charge but pay an appointment fee.
How much protection does the vaccination provide?
A vaccination can be expected to provide at least 60-70% protection against the disease, and when vaccinated people do get sick the disease tends to be milder. The Chief Epidemiologist emphasises that as many people as possible should be vaccinated, not least those who belong to priority groups.
It should be noted that vaccination can be effective even if an influenza epidemic has started, as it only takes about 1-2 weeks for protective antibodies to form after vaccination.
If you need advice, please contact your health care provider.
Arrangement of service
Influenza vaccination usually starts at the end of September. Arrangements vary from health care centre to health care centre and information on that can be found on the homepages of the health care centres.