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Influenza is a respiratory illness which is highly contagious. It is a serious condition because the infection, at times, can lead to complications and even death.
Those who are at risk of serious flu complications like older people, young children and people with certain chronic conditions should get vaccinated.The best way to prevent the flu is by getting a flu vaccination each year.
Influenza, commonly known as the "flu", is a contagious disease that can affect anyone including healthy people. It attacks the respiratory tract in humans (nose, throat, and lungs), causing inflammation of the mucous membranes.
It can be spread when an infected person coughs, sneezes, or speaks. The flu viruses are transmitted into the air through droplets and other people breathe in the viruses. When these viruses enter the nose, throat, or lungs of a person, they begin to multiply, causing symptoms of the flu. The viruses can also be spread indirectly when a person touches a surface with flu viruses on it (for example, a door knob) and then touches his or her nose or mouth. Transmission can also occur when an infected person shares food with others during mealtime without a serving spoon.
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Influenza is caused by the flu virus which has 3 main types: flu A, flu B and flu C. Flu A and flu B are responsible for seasonal outbreaks and epidemics. Between the two types, Flu A causes more severe cases and complications like pneumonia especially in the elderly, the very young (5 years and below) and those with chronic conditions.
Flu symptoms usually come suddenly which include high fever, sore throat, coughing, headache, muscle aches, and stuffy nose.
Other symptoms may include sneezing, nasal discharge, loss of appetite, fatigue, weakness, chills, and stomach symptoms.
A severe case of influenza can lead to pneumonia and other complications such as bronchitis, sinusitis, ear infection and meningitis (inflammation of the lining that covers the brain).
Persons who get the flu virus may have different reactions to the illness. Some groups of people are at high risk to develop complications which could lead to death. Older people, young children, people with weakened immune system, or those with heart and lung diseases are more likely to develop serious complications due to an attack of flu.
The following are the groups at risk for complications related with influenza infection.
Related: Know How To Fight Flu
There are antiviral medications available to treat flu. These medications act to decrease the ability of flu viruses to reproduce. To be effective, flu antiviral drugs should be taken within first 2 days after the person gets sick. They may also help reduce the severity of flu symptoms and help the person with flu recover faster by few days. It is important to remember that these flu antiviral medications are not a substitute for flu vaccination. Getting a flu vaccine yearly is still the best way to protect you from the flu.
People who develop influenza-like symptoms should seek medical attention promptly. Strenuous physical activities like running and jogging should be avoided during the illness until complete recovery. They are advised not to go to work or school and avoid crowded places to minimise the transmission of the infection to others.
There are many ways to prevent the spread of flu and to protect yourself against this infection. Assess the situation you are in. Do you belong to the group at risk of developing influenza-related complications? Are you regularly exposed to those at risk of complications from flu? Flu vaccination may be warranted and is the best protection for you against the flu.
Where flu vaccine availability is limited, vaccination is not required for the general population. However, everyone can practise healthy habits, good personal hygiene and be socially responsible.
Wash your hands thoroughly and regularly with soap and water, especially before touching your eyes, nose or mouth and after going to the toilet.
Related: Protect Yourself And Others Against The Flu
Influenza vaccination, or flu vaccination for short, is most beneficial for those who have high chance of developing complications (see list above) from an influenza infection. Unless advised otherwise by your doctor, it is recommended that you go for flu vaccination even if you are healthy, especially if you live with or take care of the following people:
It is also advisable to get flu vaccination if you are a healthcare worker as you may regularly be exposed to different flu viruses. You will also be protecting your patients by preventing the spread of the virus to them.
The flu vaccination takes effect in about 2 weeks, thus it’s better to get vaccinated early before flu season starts. In Singapore, the flu season generally occurs between December and February. Another peak season is from May to July.
Related: Beat The Flu When You Have Diabetes
Flu vaccines are offered in many locations, including hospitals, polyclinics, GP clinics and even schools. A flu vaccine can cost between $20 to $30.
Some minor side effects can be associated with flu vaccination. They are:
If these problems occur, they begin soon after the shot and usually last 1 to 2 days. However, on rare occasions, flu vaccination can cause serious problems, such as severe allergic reactions. As not everyone is suitable for flu vaccination, you should consult your doctor before getting vaccinated.
A yearly vaccination is recommended as flu viruses are constantly changing, and your body’s immunity to influenza viruses may decline over time. Thus, getting vaccinated every year provides the best protection against influenza.
*Note: This flu vaccine does not give protection against bird flu or the H7N9. Currently, there is no vaccine for this strain.
Medisave up to $400 per year per account can be used for Influenza vaccinations for persons with higher risk of developing influenza-related complications and severe pneumococcal disease respectively. (For vaccinations received on or after 1 Jan 2014)
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This article was last reviewed on
Monday, January 29, 2018
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