How can a baby get adenovirus infection? The etiology of adenovirus infection is as follows: First, culture characteristics. Human adenovirus has no sensitive animals and cannot grow in chicken embryos. However, it can multiply in a variety of cell cultures of human origin, causing significant CPE: cells swell and become round, cluster into grape bunches, and can form basophilic inclusion bodies in the nuclei of infected cells. Second, resistance. Adenovirus is relatively resistant to physical and chemical factors, acid-resistant and able to tolerate the action of proteases and bile, and can survive for more than 10 days at room temperature. 56 ℃ for 30 minutes can be inactivated. Third, pathogenicity. Adenovirus invades the body through the respiratory tract, digestive tract or conjunctiva, and proliferates in the tonsils, proliferating glands, mesenteric lymph nodes and other local lymphoid tissues, without forming viralemia. Adenovirus mainly infects children, mostly asymptomatic, and the associated clinical conditions are mainly pediatric acute pharyngitis, acute respiratory tract infections and viral pneumonia.