Influenza (flu) is a contagious viral infection.
It affects the:
- Nose
- Throat
- Lungs
It is caused by influenza viruses.
🧠 What is the Flu?
The flu spreads easily between people.
It can cause:
- Sudden illness
- Strong symptoms
- Feeling very unwell quickly
Most people recover, but it can be serious for some.
⚠️ Symptoms of Influenza
Flu symptoms usually start suddenly.
Common symptoms include:
- High temperature (fever) or chills
- Severe tiredness (fatigue)
- Body aches
- Headache
- Dry cough
- Sore throat
- Runny or blocked nose
👶 In children:
- Vomiting
- Diarrhoea
⏳ How Long Does It Last?
- Fever and body aches: around 3–7 days
- Full recovery: usually 7–14 days
- Cough and tiredness: may last weeks
🦠 How Flu Spreads
Flu spreads easily from person to person.
💧 Droplet spread
- Coughing
- Sneezing
- Talking
Droplets can land in:
- Mouth
- Nose
- Eyes
✋ Surface spread
- Touching infected surfaces
- Then touching face
📊 Flu Compared to Cold and COVID-19
These illnesses are similar but different.
🤧 Common Similarities
All three can cause:
- Cough
- Fever
- Sore throat
- Tiredness
- Runny nose
They are all viral infections.
⚠️ Key Differences
🤧 Cold
- Mild symptoms
- Comes on slowly
- Mainly runny nose and sore throat
🤒 Flu
- Comes on suddenly
- High fever common
- Severe tiredness and body aches
🦠 COVID-19
- Can range from mild to severe
- May include loss of taste or smell
- Can take longer to develop
- Can cause long-term effects
🛠️ Treatment and Management
There is no cure for flu, but it can be managed.
🛌 Self-care
- Rest
- Drink plenty of fluids
- Pain relief for fever and aches
💊 Antiviral Medication
- Can reduce how severe the flu is
- Can shorten illness time
- Must be prescribed by a doctor
💉 Prevention
- Annual flu vaccine
- Good hygiene (hand washing)
- Avoiding close contact when sick
⚠️ Comp⚠️ Complications of Influenza
Most people recover from flu without problems.
But in some cases, flu can cause serious illness.
This is more likely in:
Older adults
Young children
Pregnant people
People with long-term health conditions
Possible complications include:
Pneumonia (lung infection)
Worsening of asthma or COPD
Ear infections
Dehydration
Hospital admission in severe cases
Very rarely, flu can be life-threatening.
🧼 Protecting Yourself and Others
You can help stop flu spreading.
Simple steps include:
🧴 Wash hands often
Use soap and water for at least 20 seconds
🤧 Cover coughs and sneezes
Use a tissue or your elbow
🏠 Stay at home if you are unwell
Avoid spreading infection to others
💉 Get vaccinated
The flu vaccine is the best protection
🚫 Avoid close contact
Especially with vulnerable people when you are sick
👥 When to Get Medical Help
You should seek medical advice if:
Symptoms suddenly get worse
You have difficulty breathing
Chest pain develops
High fever does not improve
You feel confused or very drowsy
You are in a high-risk group and become unwell
📌 Key Points Summary
Flu is a viral infection
It spreads easily between people
It can be mild or serious
Most people recover in 1–2 weeks
Rest, fluids, and care help recovery
Vaccination helps prevent flu
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