Influenza (Flu)
A contagious respiratory illness caused by influenza viruses.
Overview
The flu is a contagious respiratory infection that can cause mild to severe illness. It spreads easily, especially in fall and winter.
Most people recover within a week or two. Vaccination and early antiviral treatment reduce severity and complications.
Symptoms
Common signs and symptoms of influenza (flu).
- Fever and chills
- Body aches and fatigue
- Cough and sore throat
- Runny or stuffy nose
- Headache
Causes
What can lead to this condition.
- Influenza A and B viruses
- Spread through respiratory droplets
Risk factors
Factors that can increase your risk.
- Young children and older adults
- Chronic health conditions
- Pregnancy
- Weakened immune system
Diagnosis
How providers typically confirm this condition.
- Symptom evaluation
- Rapid influenza test when needed
Treatment options
Approaches that help manage or resolve the condition.
- Rest and fluids
- Fever and pain relievers
- Antiviral medication for high-risk patients
Prevention
Steps that may help prevent or reduce the condition.
- Get an annual flu vaccine
- Wash hands frequently
- Avoid close contact when sick
When to see a doctor
- High-risk individuals with flu symptoms
- Symptoms that worsen or don't improve
Seek emergency care
- Difficulty breathing, chest pain, confusion, or bluish lips — call 911
- High fever with severe dehydration — seek urgent care
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Care for influenza (flu) is covered by most major insurance plans. Filter providers by your plan on Hippo Intelligence to find in-network options.
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