Patients with cytomegalovirus pneumonia commonly have glassy, corn-like or nodular changes in both lungs on chest radiographs and CT. Cytomegalovirus (CMV) is a viral pneumonia characterized by the formation of large type A eosinophilic intranuclear and intracytoplasmic inclusions in infected cells. Most are asymptomatic occult infections, but in immunocompromised and infants can cause severe lung infections leading to death. In recent years with the introduction of bone marrow and organ transplantation and the increasing number of AIDS patients, CMV has become the most common causative agent in both conditions. Prevention of hairy glassy corn-like or nodular changes in both lungs: 1. Wash your hands often and don’t smoke Be sure to wear a mask when cleaning up dusty or moldy places; pneumococcal vaccination can prevent Streptococcus pyogenes pneumonia, and children should also be vaccinated with Hib (Haemophilus influenzae type B) vaccine; when going to the hospital, wear a mask whenever possible to prevent cross-infection of the respiratory tract; slow fever reduction: after exercise, you should first Dry sweat and pay attention to keep warm; drink warm water often; 2. Mycoplasma infection can cause a small epidemic, so attention should be paid to respiratory isolation The room should also be regularly opened and ventilated in autumn and winter to keep the indoor air fresh. Drink more warm water, and eat a diet of easily digestible and nutritious food. Carry out more outdoor activities and physical exercise, especially respiratory exercise to improve respiratory function. In the cold season or sudden changes in climate when you go out, you should add clothes in time to prevent cold and flu. 3, keep the indoor air fresh to medium housing area, for example, in winter, a set of about 80 square meters of housing, in the absence of high winds, after opening the window ventilation 9 minutes can play a role in replacing the indoor and outdoor air once; eat more vitamin A-rich animal liver and carrots, pumpkin, sweet potatoes and tomatoes, citrus fruits are the best source of vitamin C; in the high season of pneumonia Older people should try to avoid being bedridden for a long time. 4, usually children should pay attention to physical exercise often outdoor activities. The windows should be opened and ventilated, so that the body’s ability to withstand cold and adapt to changes in environmental temperature is enhanced, with the temperature change in time to increase or decrease clothing, avoid contact with children with respiratory infections, in the epidemic season of respiratory infections, do not take children to public places, reasonable deployment of nutrition, early oral calcium and vitamin AD, sun exposure, which can retreat from the susceptibility factors of pediatric pneumonia, but also help the pneumonia This can reduce the susceptibility of children to pneumonia and help prevent it. The child should be vaccinated on time, not be picky about food, not be partial to food, and have enough rest and sleep.