What are the causes and symptoms of influenza?

summary

Influenza is an acute respiratory tract infection caused by influenza virus, and it is also a disease with strong infectivity and fast transmission speed. It is mainly transmitted through droplets in the air, contact between people or contact with contaminated objects. Typical clinical symptoms are: acute high fever, general pain, significant fatigue and mild respiratory symptoms. Generally, autumn and winter is the high incidence period, which causes serious complications and death. The disease is caused by influenza virus, can be divided into a (a), B (b), C (c) three types, a virus often occurs antigen mutation, infectious, spread rapidly, easy to occur large-scale epidemic. What are the causes and symptoms of influenza? What are the causes and symptoms of influenza? Let's talk about it

What are the causes and symptoms of influenza?

Simple influenza often suddenly onset, chills and high fever, body temperature can reach 39 ℃ ~ 40 ℃, with headache, muscle and joint pain, extreme fatigue, loss of appetite and other systemic symptoms, often throat pain, dry cough, nasal congestion, runny nose, sternal discomfort, etc. Her face was flushed, and her conjunctival outer canthus was slightly congested. If there is no complication, it is a self limiting process. After 3-4 days of onset, the body temperature gradually subsides and the general symptoms improve. However, it usually takes 1-2 weeks for cough and physical recovery. Mild influenza is similar to common cold. The symptoms are mild and can recover in 2-3 days.

Pneumonia type influenza is actually complicated with influenza virus pneumonia, which is more common in the elderly, children and people with original cardiopulmonary diseases. The main manifestations were persistent high fever, severe cough, hemoptysis or purulent sputum, shortness of breath, cyanosis, and moist rales in the lungs. Chest X-ray showed scattered flocculent shadows in both lungs. No pathogenic bacteria were found in sputum culture, and influenza virus could be isolated. May die of respiratory and circulatory failure.

Toxic influenza presents severe symptoms such as high fever, shock, respiratory failure, central nervous system damage and disseminated intravascular coagulation (DIC), with high mortality. In addition to fever, gastrointestinal influenza is characterized by vomiting, abdominal pain and diarrhea. It can recover in 2-3 days.

matters needing attention

Rest in bed, drink more water, give liquid or semi liquid diet, suitable for nutrition, supplement vitamins, rinse with warm water or warm saline after eating, keep mouth and nose clean, and give anti infection treatment when systemic symptoms are obvious. Early application of antiviral therapy. We should adhere to the principle of paying equal attention to prevention and isolation as well as drug treatment, and to cause treatment as well as symptomatic treatment. The basic principles include early application of anti influenza drugs, avoiding blind or inappropriate use of antibiotics, strengthening supportive treatment, preventing and treating complications, and rational use of symptomatic drugs.