英语新闻听写 流感疫苗确实有效

（单词翻译）

According to the CDC, there was widespread flu activity visible across all 50 US states by the end of December, a trend never before seen in the 13-year history of the current flu surveillance system.

美国疾病控制与预防中心表示，截至12月底，全美50个州都有广泛的流感活动，这个趋势目前的流感监测系统13年来从未遇到过。

The seasonal¹ flu vaccine², though not always 100% effective, still tends to weaken the severity of a bout³ of flu.

季节性流感疫苗虽然不是100%有效，但仍然会减弱流感发作的严重程度。

It also saves lives as a 2015 study by the CDC finds that seasonal flu shots had prevented at least 40,000 deaths from 2005 to 2014.

美国疾病预防控制中心(CDC) 2015年的一项研究发现，从2005年到2014年，季节性流感疫苗使得至少4万人免于死亡，因此流感疫苗也挽救了生命。

While this current flu season isn't the world-shattering pandemic seen in 1918-1919, it's still gearing up to be one of the worst in years.

虽然目前的流感季节并不像1918-1919年那场流行病一样波及全世界，但它仍然是近年来最严重的流感之一。