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本文对１９９３年１２月２７日～１９９４年１月中旬发生在某部营区的一起急性呼吸道感染流行进行了流行病学调查。罹患率达４０％。采用病原学快速诊断和病毒分离，以及双份血清均确诊为乙型流感病毒引起，流行株的抗原性变异明显。
This article conducted an epidemiological investigation on the epidemic of an acute respiratory infection occurred in a barracks area from December 27, 1993 to mid-January 1994. Attack rate of 40%. Epidemiological rapid diagnosis and virus isolation, as well as double serum were diagnosed as influenza B virus caused by epidemic strains of antigenic variation significantly.