Influenza is a viral infection that affects the respiratory system and the lung, ranging from mild cases to severe illness, and spreads rapidly among humans.
What are the symptoms of influenza and how do they differ from a cold?
Flu symptoms are typically more severe than those of a common cold and often appear very suddenly. These signs include:
- High fever and chills.
- Headache and muscle aches.
- Dry cough and sore throat.
- General fatigue and loss of appetite.
- Children may exhibit additional symptoms such as nausea, vomiting, and diarrhea.
Facts about influenza and transmission
The infection is transmitted by inhaling air contaminated with droplets from an infected person’s sneeze or cough, or by touching contaminated objects. It is important to know that the flu is contagious before symptoms appear; a patient can transmit the virus to others before feeling ill. They remain contagious for 3 to 4 days after symptoms appear, and this period may extend to 7 days.
Prevention methods and the influenza vaccine
Annual vaccination is recommended because viruses constantly change. Facts confirm that the flu vaccine does not cause the flu; the adult injection contains killed viruses, while the children’s injection contains attenuated viruses.
The vaccine becomes effective two weeks after administration, which is the time the body needs to develop antibodies. Some mild side effects may occur, such as pain at the injection site or a slight fever.
Influenza treatment options and home care
Influenza cannot be treated with antibiotics because they target bacteria only, not viruses. Instead, a doctor may prescribe antiviral medications (such as Oseltamivir or Baloxavir) to reduce the duration of the illness and prevent complications; these are preferably taken within the first two days of infection.
Home tips to alleviate symptoms:
- Rest and Fluids: Get adequate sleep and drink water, juices, and warm broths to prevent dehydration and help clear mucus.
- Nutrition: Eat foods rich in vitamins C and E (such as broccoli, nuts, and sunflower oil) to boost immunity, while reducing sugars.
- Hygiene: Wash hands frequently and avoid touching the eyes or mouth.
- Pain Relievers: Use acetaminophen or ibuprofen for fever and headache. Avoid giving aspirin to children and adolescents (under 16 years old) to avoid the risk of Reye’s syndrome.
Note: Opinions vary regarding vitamin C and zinc; while some believe they help in prevention and treatment, other sources indicate a lack of scientific evidence proving their ability to cure the disease.
When to visit a doctor?
Seek medical care immediately if the following signs appear:
- Difficulty breathing or chest pain.
- Fever that lasts more than 3 days, or drops and then rises again.
- Cold symptoms that persist for more than 10 days.
- Appearance of a skin rash.
- Discharge or pain in the ear or facial bones.
- Sore throat without cold symptoms.
Frequently Asked Questions
What are the symptoms of seasonal influenza?
It is characterized by sudden fever, headache, muscle aches, cough, and extreme fatigue.
What are the side effects of the flu vaccine?
Some may experience pain at the injection site, muscle aches, or a slight increase in temperature for two or three days.
What are the severe symptoms and complications of influenza?
It can progress to bacterial infections such as pneumonia affecting the lung, or bloodstream infections. It may cause a decline in the condition of those with chronic diseases like diabetes and asthma, and in rare cases, it may lead to a stroke or heart attack.
Medical Disclaimer: This content is for informational purposes only and is not a substitute for consulting a specialist doctor or obtaining an accurate medical diagnosis.
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Illustration: AI-generated
approved by: Medica Health team