Seasonal influenza, commonly known as the flu, is a contagious respiratory infection caused by influenza viruses. It can spread quickly, particularly in crowded environments such as schools, offices, factories and other shared spaces.
Common symptoms include sudden fever, chills, cough, sore throat, headache, body aches and fatigue. Compared with the common cold, influenza often begins more suddenly and can cause more significant symptoms.
While many people recover without complications, influenza can sometimes lead to pneumonia and other serious complications, especially in older adults, young children, pregnant women and people with certain chronic medical conditions.
WHO SHOULD CONSIDER FLU VACCINATION?
Influenza vaccination is an important way to help protect against seasonal flu and its complications. WHO particularly recommends vaccination for people at higher risk, including:
- Adults aged 65 and above
- Young children, particularly those under 5 years of age
- Pregnant women
- People with chronic medical conditions such as heart disease, lung disease, diabetes, kidney or liver disease
- People with weakened immune systems
- Healthcare workers and caregivers
- People who work, study or live in crowded or close-contact environments
WHY DO I NEED A FLU VACCINE EVERY YEAR?
Annual vaccination is recommended for two main reasons.
First, protection from vaccination decreases over time. Second, influenza viruses continually change, so vaccine formulations are regularly reviewed and updated to better match the viruses expected to circulate.
It generally takes around 2 weeks after vaccination for the body to develop its immune response.
WHAT ARE THE COMMON SIDE EFFECTS?
Most side effects are mild and temporary. They may include:
- Pain, redness or swelling at the injection site
- Headache
- Muscle aches
- Fatigue
These usually resolve on their own.
WHEN SHOULD I SPEAK TO A DOCTOR BEFORE VACCINATION?
Before receiving a flu vaccine, inform your healthcare professional if you:
- Have previously experienced a severe allergic reaction to an influenza vaccine or any component of the vaccine
- Are currently experiencing a moderate or severe acute illness, with or without fever
- Have had Guillain-Barré syndrome within 6 weeks of a previous influenza vaccination
- Have other medical conditions or concerns that may affect your suitability for a particular vaccine
Egg allergy alone is generally not a reason to avoid influenza vaccination. People with egg allergy can receive an appropriate influenza vaccine, but should still inform their healthcare professional about their allergy history.
PROTECT YOURSELF. PROTECT THOSE AROUND YOU.
Vaccination is one of the most effective ways to help prevent influenza. Good hand hygiene, respiratory etiquette, staying home when unwell and avoiding close contact with people who are sick can also help reduce transmission.
💉 Flu vaccines are available at Raffles Medical Vietnam. Book your appointment today and take a proactive step towards protecting yourself and your loved ones.
