There are three types of seasonal influenza – A, B and C. Type A influenza viruses are further typed into subtypes according to different kinds and combinations of virus surface proteins.
有三种类型的季节性流感——甲型、乙型和丙型。根据病毒表面蛋白不同的种类和结合情况，甲型流感病毒又进一步分类为亚型。
Two different strains within a single subtype, two different influenza A subtypes(H1N1 and H3N2), or both influenza A and B viruses may cocirculate.
单一亚型内的两个不同菌种之间，A型流感病毒的两个不同亚型（H1N1和H3N2）之间，以及A型流感病毒和B型流感病毒之间均可以互相转染。
Objective To inquire the effects of cooking oil fumes on the immunologic function by determining T and B lymphocyte subtypes in peripheral blood of cooking workers.
目的：通过对饮食从业人员外周血T淋巴细胞亚群、B淋巴细胞数量分析来了解烹调烟雾对机体免疫功能的影响。
Objective To inquire the effects of cooking oil fumes on the immunologic function by determining T and B lymphocyte subtypes in peripheral blood of cooking workers.
目的：通过对饮食从业人员外周血T淋巴细胞亚群、B淋巴细胞数量分析来了解烹调烟雾对机体免疫功能的影响。
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