Symptoms of respiratory syncytial virus

Respiratory syncytial virus is a harmful virus. If you are infected with this virus and do not receive timely and effective treatment, it will cause other symptoms, often causing patients to have symptoms such as high fever, rhinitis, pharyngitis, etc., so treatment issues must also be paid attention to.

1. Clinical manifestations

This disease is more common in infants and young children, more than half of whom are infants under 1 year old. There are more boys than girls, with a ratio of about 1.5 to 2:1. The incubation period is about 4 to 5 days. Cough and nasal congestion may be seen in the early stages. About 2/3 of the cases have high fever, which can reach up to 41°C, but the fever is generally not persistent and is easily reduced by antipyretics. The high fever lasts mostly for 1 to 4 days, and a few for 5 to 8 days. About 1/3 of the children have moderate fever, which usually lasts 1 to 4 days. In most cases, the fever lasts for 4 to 10 days. Mild cases have no obvious dyspnea and neurological symptoms, while moderate and severe cases have obvious dyspnea, wheezing, cyanosis of lips, scalloped nose and three-recess sign. A few severe cases may also be complicated by heart failure. Chest auscultation usually produces fine, coarse or medium rales, and percussion usually produces no dull sounds, although a few may produce clear sounds.

X-ray examination: Most cases have small flake-like shadows, large flake-like shadows are extremely rare. About 1/3 of the children have varying degrees of emphysema.

Blood picture: The total white blood cell count is generally between (5-15)×109/L (5000-15000/mm3), and most are below 10×109/L (10000/mm3). The neutrophil count is usually below 70%.

2. Treatment measures

Pay special attention to general treatment, pay attention to isolation, and try to prevent secondary bacterial or other viral infections. If there is no secondary bacterial infection, only traditional Chinese medicine treatment is needed. For general treatment, please refer to the section on bronchopneumonia, and for others, please refer to the section on adenovirus pneumonia. Since the disease is relatively mild, there is no need for so much symptomatic and supportive therapy.

Regarding antiviral chemical drugs, more serious cases can be treated with triazole ribavirin nebulization. Please refer to the previous volume for an overview of viral infectious diseases. Recently, some people abroad have used short-term, high-dose nebulization to effectively treat syncytial virus infection. In addition, in recent years, Shanghai Xinhua Hospital has used whey liquid (colostrum dilution) nebulization to treat syncytial virus lower respiratory tract infections, and Wenzhou Medical College has extracted SIgA from colostrum for nebulization inhalation to treat respiratory syncytial virus pneumonia, which has achieved good results and can be applied.

Prognosis

The disease is generally mild. Simple cases recover clinically in 6 to 10 days, and X-ray shadows usually disappear in 2 to 3 weeks. If the isolation measures are not effective, secondary infection is likely to occur and fever may occur again. Death from simple syncytial virus pneumonia is rare.