Influenza

Influenza, a highly contagious respiratory infection caused by influenza viruses, circulates globally each year, often peaking in colder months. The virus spreads via droplets from coughing, sneezing, or close contact, leading to symptoms like fever, body aches, cough, and sore throat. While many recover quickly, severe cases can result in pneumonia, worsening of chronic heart or lung diseases, hospitalisation, or even death, particularly in vulnerable populations.

Influenza viruses mutate frequently, necessitating an annually updated vaccine formulation to match circulating strains. Influvac Tetra, Vaxiflu-4, and Fluarix Tetra are all quadrivalent influenza vaccines designed to protect against four types of influenza virus (two A strains and two B strains). While vaccine effectiveness varies by season and strain match, studies consistently show that influenza vaccines reduce the incidence of illness, hospitalisation, and severe complications.

The influenza vaccine for adults protects against infection caused by influenza viruses, which spread easily through droplets from coughs and sneezes. It helps prevent fever, sore throat, body aches, cough, and fatigue, which can disrupt daily activities and academic schedules.

• Reduces the likelihood of getting the flu and of experiencing severe disease
• Even if infection occurs, symptoms are generally milder and complications are less frequent
• Supported by decades of global use, with favourable safety data
• Best impact when received before the start of the flu season
• Helps slow the spread in the community (herd effect)
• Reduces healthcare burden (hospitalisations, lost work days)

The influenza vaccine for adults has a strong safety profile with side effects that are generally mild and self-resolving: Common, mild, and temporary side effects may include:

Very rare allergic reactions may occur

Precautions to follow before receiving the influenza vaccine dose for adults:

• Tell your doctor about any history of severe allergic reactions or hypersensitivity
• If you have moderate or severe acute illness (with fever), vaccination may be deferred
• Minor illnesses (like a mild cold) generally do not preclude vaccination
• Stay hydrated and have a light meal before the vaccination
• Wear clothing that allows easy access to the upper arm
• Remain under observation for roughly 15 minutes post-vaccination