在美国六人中就有一人患过甲流
CDC: About 1 In 6 Americans Hit With Swine Flu Approximately 47 million Americans, or about one in six people in the U.S., were sickened with swine flu from April to mid-November and 9,820 of them died, the Centers for Disease Control and Prevention said Thursday, indicating the new virus spread widely before cresting last month.The new numbers reflect a substantial increase in illnesses between mid-October and Nov. 14, as a fall wave peaked and then began to decline. About 213,000 people were hospitalized during the period, about the same amount as in a normal flu season, the CDC said.
The CDC estimated in November that as of Oct. 17, 22 million people had been ill and 3,900 had died. A small portion of the difference between the old and new estimates was due to corrections for late reporting, the CDC said.
Nonelderly adults and children made up the vast majority of illnesses, hospitalizations and deaths from April through November, reflecting the heavier-than-usual toll this virus has taken on the young. 'Many times more children and younger adults, unfortunately, have been hospitalized or killed by H1N1 influenza than during a regular flu season,' said CDC Director Thomas Frieden.
While pediatric hospitalizations and deaths have drawn a lot of attention, adults under age 64 appear to have suffered worse. About 16 million children became ill, but their death rate was lower than those of nonelderly adults and seniors, according to the CDC data.
About 71,000 children were hospitalized and 1,090 died from April to Nov. 14. About 27 million adults between the ages of 18 and 64 were sick with H1N1 flu, 121,000 were hospitalized, and 7,450 died.
Four million people ages 65 and older are estimated to have been ill, with 21,000 hospitalized and 1,280 deaths.
Still, the death toll on the young was higher than with seasonal flu. Fewer than 1,000 people under the age of 50 die from flu in a normal season, Dr. Frieden said. The comparisons aren't exact, because the CDC calculates deaths from seasonal flu differently, he cautioned. About 90% of the estimated 36,000 people who die annually from the seasonal flu are elderly, according to the CDC.
美国六人中就有一人患过甲流 美国疾病控制与预防中心周四表示，今年4月至11月中旬，美国约有4700万人患甲型H1N1流感，相当于每六个美国人中就一人得病，有9,820人死亡。该机构指出，这一病毒在美国广泛传播，在上个月达到了顶峰。
从这一新数据可以看出，甲型H1N1流感病例在10月中旬至11月14日之间出现了大幅增长；该疾病在秋季见顶，随后开始下滑。美国疾病控制与预防中心说，这段时期有约21.3万人住院接受治疗，人数约和正常的流感季节相当。
美国疾病控制与预防中心11月预计，截至10月17日，美国有2,200万人生病，有3,900人死亡。该机构说，两次预计之间存在的差别中，有一小部分是因为后一份报告进行的修正。
从4月到11月的这段时期，美国甲型H1N1流感的患病、住院以及死亡病例中，绝大多数是非老年成人和儿童，表明该病毒对年轻人的影响高于平常。美国疾病控制与预防中心主任弗里登说，不幸的是，因甲型H1N1流感而住院或死亡的儿童和年轻人数量是正常流感季节的数倍还多。
尽管儿童患病住院和死亡状况吸引了诸多关注，但64岁以下的成年人似乎遭受的冲击最为严重。美国疾病控制与预防中心的数据显示，美国约有1,600万儿童感染甲型H1N1流感，但他们的死亡率低于非老年成年人和老年人。
从4月到11月14日，美国约有7.1万名儿童因为甲型H1N1流感住院，有1,090人死亡。同期美国18至64岁的成年人中，约有2,700万人感染甲型H1N1流感病毒，12.1万人因此住院，有7,450人死亡。
年龄在65岁以上的老年人群中，预计同期有400万人患病，有2.1万人住院，有1,280人死亡。
年轻人感染甲型H1N1流感的死亡率高于季节性流感。弗里登说，在正常的流感季节，美国50岁以下人群因流感死亡的病例不超过1,000例。他提醒说，这一比较并不精确，因为美国疾病控制与预防中心对季节性流感有不同的统计方法。该机构说，预计每年美国有3.6万人死于季节性流感，其中约90%都是老年人。
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