What causes lower respiratory tract infection in children?

There are three main reasons for children to have lower respiratory tract infections. The most common ones are complications of colds and spread of upper respiratory tract infections. Because children's immunity is not particularly good, if they are not properly cared for when they are sick, it is easy to induce this infection. Accidental contact with pathogens can also cause lower respiratory tract infections.

Children's body's ability to resist external germs is very weak, and they are easily infected by the outside world and get sick, especially the respiratory tract. The mucous membrane of the respiratory tract is easily exposed to external dirt. Lower respiratory tract infection is much more serious than upper respiratory tract infection. Common diseases of this infection include pneumonia and bronchitis. So what causes lower respiratory tract infection in children?
1. What causes lower respiratory tract infection in children?
1. Spread of upper respiratory tract infection <br/>When a child's upper respiratory tract is infected and not promptly controlled and treated, the virus can easily spread to the lower respiratory tract, which can cause infection. This indicates that the disease has become very serious and must be treated promptly, otherwise it may be life-threatening.
2. Contact with pathogens <br/>Children may be exposed to pathogens when they go out and may be infected through breathing. This is generally related to the low immunity of children. In addition, if children have bad living habits, such as not washing hands or changing clothes after going out, they are also likely to be exposed to pathogens and get infected.
3. Complications of colds <br/>Most respiratory infections are caused by complications of colds. When you have a cold, the germs will spread throughout your body. If you don't treat it in time, the germs will directly reach the lower respiratory tract, causing bronchial and lung infections. Lower respiratory tract infections caused by complications of colds are also more serious and may affect the nervous system, so they must be treated as soon as possible once discovered.
2. What are the symptoms of lower respiratory tract infection in children?
1. Cough <br/>The symptoms of this disease are similar to those of upper respiratory tract infection. In the early stage of the disease, there will be a persistent cough. It will be a dry cough at first, and then it will become a cough with phlegm.
2. Fever <br/>Because this disease is an infectious symptom, the body temperature will definitely rise. Most children's fever symptoms are not very serious, but a small number of children may have a temperature rise to 40 degrees.
3. Sounds when breathing <br/>Lower respiratory tract infection can cause the child to have a distinct wheezing sound when breathing. This sound is very clear even to others.