In recent years, Equine Influenza showed those characters, wide prevalence, high frequency of outbreak, short interval epidemic time.
近年来，全球马流感的流行呈现流行范围广、发病频次高、发生年度连续性强的特点。
In recent years, Equine Influenza showed those characters, wide prevalence, high frequency of outbreak, short interval epidemic time.
近年来，全球马流感的流行呈现流行范围广、发病频次高、发生年度连续性强的特点。
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