H1N1 influenza, also known as Swine flu, Pig influenza, Hog flu and Pig flu, is caused by the H1N1 virus. Among the influenza viruses, the H1N1 virus is a newer strain, and its symptoms are similar to the common Influenza. The H1N1 virus originated from pigs, but has now become a human flu virus during the flu season. Although the virus can still spread among pigs and H1N1 swine flu, humans do not get H1N1 as a result of eating processed and cooked pork.

This massive flu is a contagious disease that is rampant around the world. The first human case of H1N1 infection occurred in 2009, when the outbreak of H1N1 became a new flu.

How common is H1N1 influenza?

H1N1 flu is common and people of any age may get H1N1, but it can be avoided, discuss with your doctor for more information.

Symptoms of H1N1 influenza

Common symptoms of H1N1 influenza are as follows:

Sore throat
Nasal congestion
Runny nose
Muscle soreness

These symptoms are similar to those of seasonal influenza, and H1N1 can cause pneumonia, lung infections, or other respiratory diseases like common flu, and may also cause asthma. This article does not list all H1N1 flu symptoms. If you still have concerns, please consult your doctor.

When should I see a doctor for H1N1 Swine Flu?

If you have the following symptoms, you are advised to visit a hospital:


Shortness of breath or dyspnea.
Skin is blued.
Not drinking enough water.
Not waking up from sleep, not willing to get up
Irritable, do not want to be held.
Influenza-like symptoms improved, but accompanied by fever and severe cough.
Fever, rash.


Dyspnea or shortness of breath.
Pain or stress in the chest or abdomen.
Suddenly dizziness
Uncontrollable behaviour
Severe vomiting or persistent vomiting.
Influenza-like symptoms improved, but accompanied by fever and severe cough.

Causes of H1N1 influenza

H1N1 is caused by the strains of the flu virus, originally transmitted only between pigs, but it was also transmitted to humans. H1N1 is a highly contagious flu that is transmitted through the saliva and mucosal particles of the human body, as follows:

Touching the nose and mouth after touching the surface contaminated by germs, such as doorknob.
Contact with infected people.

The incubation period of H1N1 is 7 days.During the incubation period, the virus is contagious even if there are no symptoms, and the incubation period for children can be up to 10 days.

Risk factors for H1N1 influenza

The following types of people have a higher risk of H1N1 infection:

Older people over 65 years of age.
Children under 5 years of age.
Young people under 19 years of age who are taking Aspirin for a long time.
People with impaired immune system, such as AIDS patients.
Pregnant women.
People with chronic diseases such as asthma, heart disease, diabetes or neuromuscular disease.
Person living in residential homes or long-term care centres.
Diagnosis and treatment of H1N1 influenza
This article does not represent any medical advice, please consult your doctor for more information.

How to diagnose H1N1 influenza?

The patient is sampled with a liquid, and the doctor or nurse may use a cotton swab to take a sample from the nose or throat, and then send the sample to the laboratory for H1N1-specific virus.

How to treat H1N1 flu?

Most H1N1 cases do not require medication and do not require consultation unless there are related medical complications. What the patient should do is try to alleviate the symptoms and avoid spreading the flu to others.

There are currently two oral drugs suitable for H1N1, including Oseltamivir, Tamiflu and Zanamivir. Most cases do not require medication because influenza viruses are resistant, so unless they belong to a high-risk group, healthy people, even H1N1 flu, can rely on their own resistance to beat the virus.

Lifestyle Adjustment and Home Therapy

The following lifestyle patterns and home remedies may help to combat H1N1 influenza:

Adequate sleep strengthens immunity.
Drink plenty of water to prevent dehydration, and drink soup or juice to supplement the loss of nutrients.
Use commercialized painkillers to relieve symptoms such as headaches or sore throat.
Wash hands diligently with soap, or often dry hand cleaning.
Do not touch the mouth, nose and eyes, as the virus will survive on surfaces such as mobile phones.
If you are sick, take leave to rest at home to avoid transmission to others.
If you still have any questions, discuss with your doctor the best treatment for you.

Read: H7N9 Bird Flu Explained