Influenza A

Influenza A is the most clinically significant of the influenza subtypes, responsible for major seasonal flu epidemics and all recorded flu pandemics. In Southeast and East Asia, including Japan, South Korea, and the Philippines, A strains circulate year-round rather than in a single winter peak, making vigilance worthwhile beyond the traditional flu season.

Medicine used to treat Influenza A

Symmetrel

Amantadine

100mg

Developed to support motor control and indicated to alleviate symptoms of parkinsonian conditions.

From $0.85 / tablet View

Symptoms and when to get help

The illness typically arrives fast: fever above 38 C, chills, body aches, headache, and a dry cough appearing within one to two days of exposure. Most healthy adults recover in a week with rest and fluids. Seek care promptly if breathing becomes difficult, chest pain develops, confusion sets in, or a high fever persists beyond five days, these signs point to complications such as pneumonia that need assessment.

Antiviral treatment

Antivirals work best when started early, ideally within 48 hours of symptoms. Amantadine is one of the older agents with activity against influenza A; it targets the virus’s M2 ion channel and can shorten illness duration when used early in the course. Note that resistance patterns vary by circulating strain, so its suitability depends on the specific virus in your region at the time.