Pneumonia caused by respiratory syncytial virus infection is characterized by persistent wheezing, wheezing, shortness of breath, chest tightness, shortness of breath, and in severe cases, respiratory distress leading to respiratory failure. In severe cases, respiratory distress may lead to respiratory failure. There may also be persistent hyperthermia with excessive sweating leading to deficiency and, in severe cases, shock with extremely unstable vital signs, drowsiness, lethargy, coma, etc. In addition, due to the inflammation, the heart function may be affected to different degrees, causing different degrees of damage to the heart muscle, resulting in palpitations.