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目的研究埃可病毒在小儿上、下呼吸道感染的感染率和临床表现。方法用免疫酶方法检测小儿上、下呼吸道感染病儿咽部分泌物中埃可病毒抗原。结果97例上、下呼吸道感染中，检测出ECHO病毒抗原20例（占20．6％）；58例肺炎中ECHO病毒抗原阳性12例（占20．7％）；15例急性支气管炎中阳性2例（13．3％）：24例上呼吸道感染中阳性6例（占25．0％）。对ECHO病毒肺炎、支气管炎、上呼吸道感染的临床表现进行了分析。结论ECHO病毒是小儿上、下呼吸道感染常见病原之一。
Objective To study the infection rate and clinical manifestation of children with upper and lower respiratory tract infection of echovirus. Methods The echovirus antigen in pharyngeal secretions of children with upper respiratory tract infection and lower respiratory tract infection was detected by enzyme immunoassay. Results ECHO virus antigens were detected in 20 cases (20.6%) in 97 cases of upper and lower respiratory tract infections. ECHO virus antigens were found in 58 cases of pneumonia (20.7%), and 15 cases of acute bronchitis were positive 2 cases (13.3%): positive in 6 cases of upper respiratory tract infection in 6 cases (25.0%). The clinical manifestations of ECHO virus pneumonia, bronchitis and upper respiratory tract infection were analyzed. Conclusion ECHO virus is one of the common pathogens of upper respiratory tract infection in children.