由于今年气温比往年高，人体的免疫力下降，而病毒比较容易繁衍再加上病毒毒力较高，所以这也是出现重症患儿较多的一个原因。
As the temperature is higher than the past year, the body's immune system decline, the virus easier to reproduce, coupled with high virulence, so that there is a reason for more severe in children.
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