Influenza (Flu): Clinical Overview

Influenza is a highly contagious respiratory viral illness caused by influenza A or B viruses. It spreads through respiratory droplets and causes sudden fever, severe body aches, fatigue, cough, and headache. Annual vaccination is recommended for prevention.

Key Symptoms of Influenza (Flu)

Treatment Options for Influenza (Flu)

Complete Influenza (Flu) Clinical Guide

Related Symptom Combinations

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Medical References

Content on this page is informed by evidence-based clinical sources including: