The composition of EV-A71 showed a clear trend over time.
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Study on the interaction between different pathogens of Hand, foot and mouth disease in five regions of China.
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The sentences
In this study, a significant trend in the composition ratio of different pathogens over time was observed in all the five study areas.
The study showed that the predominant pathogen causing the occurrence of severe cases of HFMD in China was overall dominated by EV-A71, but after 2013 and 2015 the percentage of EV-A71 showed a decreasing trend, and in 2018 other enteroviruses became the dominant pathogen ( 36 ).