Influenza, commonly known as the flu, is a highly contagious respiratory virus that can cause serious illness, particularly in high-risk groups such as the elderly, young children, and individuals with chronic conditions. It spreads through droplets from coughing, sneezing, or speaking, and can be transmitted indirectly by touching contaminated surfaces. Influenza A and B are responsible for seasonal outbreaks, with Influenza A often leading to more severe cases and complications like pneumonia.
Symptoms and Complications
Flu symptoms can develop suddenly, including high fever, sore throat, cough, muscle aches, and nasal congestion. Severe cases may lead to complications such as pneumonia, bronchitis, and ear or sinus infections. Those at highest risk include individuals aged 65 and above, young children, and people with chronic diseases or weakened immune systems.
Self-Care and Treatment
For most individuals, the flu requires rest and hydration. Antiviral medications can reduce symptom severity and shorten recovery time if administered within the first 48 hours of illness onset. However, these medications are not a substitute for vaccination. Antibiotics are ineffective unless there is a secondary bacterial infection.
Prevention and Vaccination
The best preventive measure against influenza is an annual flu vaccination, which is recommended for high-risk groups, including healthcare workers. Flu vaccines protect against the strains expected to be most prevalent each season. Hand hygiene, respiratory etiquette, and social responsibility are key practices to reduce transmission. The flu vaccine may cause mild side effects such as soreness at the injection site, low-grade fever, or muscle aches, but serious reactions are rare.
Vaccination Availability
Flu vaccines are widely available in Singapore at CHAS GP clinics, polyclinics, and other healthcare settings. Subsidies and MediSave are available for eligible high-risk groups, such as children, seniors, and individuals with chronic conditions.
Yearly vaccination is advised due to the evolving nature of flu viruses and waning immunity over time. Healthcare professionals should encourage vaccination, especially among high-risk patients and those regularly exposed to flu.
Adapted from: 1. https://www.healthhub.sg/a-z/diseases-and-conditions/topics_influenza
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