Influenza Know it first...prevent it before it spreads in the rainy season
Health News
07 May 2025
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Influenza Know it first...prevent it before it spreads in the rainy season
May marks the beginning of the rainy season, a time when a common yet often underestimated illness — influenza — tends to spread more widely. In Thailand, influenza is well-known and can occur throughout the year, but outbreaks are most frequent during the rainy and winter seasons. Even individuals who have previously contracted the flu can get it again, and it can affect people of all ages. Compared to the common cold, influenza often presents with more severe symptoms and carries a higher risk of complications or even death.
Symptoms of Influenza
Uncomplicated influenza has an incubation period of 1–4 days (typically 2 days).
- Sudden fatigue
- Loss of appetite, nausea
- Severe headache
- Muscle and joint aches, especially around the eyes
- High fever (39–40°C)
- Sore throat, red throat, and clear nasal discharge
- Dry cough, flushed skin, red eyes
- Vomiting or diarrhea, followed by improvement after 2–4 days of fever. Nasal congestion and throat irritation may persist for up to a week.

Transmission
Influenza spreads similarly to the common cold—via droplets from sneezing or coughing, or through contact with contaminated items such as towels, drinking glasses, phones, toys, and remote controls. Touching your face afterward allows the virus to enter the body.

Treatment
Rest and hydration are essential to ease symptoms. In high-risk patients, antivirals may be prescribed. While these medications may cause nausea or vomiting, taking them with food can reduce side effects.

Vaccination helps reduce the severity of symptoms and lowers hospitalization risk. Since flu and COVID-19 share similar symptoms, flu vaccination helps reduce confusion between the two. It’s also possible to receive both flu and COVID-19 vaccines at the same time. People allergic to egg white can generally still receive the flu vaccine.

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