Although transmission by large droplets when people cough or sneeze is considered the major route of influenza spread, transmission via contaminated hands may be a contributing factor.
Cultural factor is the very important factor for teaching English well and learning English well. Language is a communicational tool and important means of culture transmission.
文化因素是教好英语，学好英语之非常重要的因素，语言是交际工具、是文化传播及传承的重要手段。
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S one factor which has been implicated in the transmissionof HCV in this setting is when a nurse pushes a cart of medication and supplies between one dialysis unit to another.