미 질병관리본부는 2009년 4월~10월까지 미국에서 2천2백만명이 신종플루에 감염되었으며, 어린이 사망자 540명을 포함하여 모두 3900명이 사망했을 것으로 추정된다고 밝혔습니다.
CDC는 또한 9만 8천명의 미국인이 입원치료를 받았을 것으로 추정된다고 밝혔습니다.
신종플루는 특히 어린이 계층에서 피해가 컸는데… 8백만명의 어린이가 신종플루에 감염되었으며, 3만 6천명의 어린이가 입원했을 것으로 추정됩니다. 어린이 사망자는 앞서 밝힌대로 540명으로 추정됩니다. 보통 겨울철 계절성 독감으로 사망하는 어린이가 80명 선인 것과 견주어 볼 때 신종플루 바이러스에 면역성을 획득하지 못한 어린이들의 피해가 컸음을 알 수 있습니다.
일반적인 계절성 독감의 경우, 사망자 및 입원자의 90%가 65세 이상의 노령층이었습니다. 반면 신종플루의 경우, 사망자 및 입원자의 90%가 65세 이하의 유-청-장년층으로 밝혀졌습니다.
(이 부분은 이상하게도 한국의 데이터와 눈에 띄게 차이가 납니다)
======================================
Swine flu toll: 540 children, 6 months
By Steve Sternberg, USA TODAY
출처 : USA Today – Dec 07 1:51 PM
http://www.usatoday.com/NEWS/usaedition/2012-12-21-1Aflu13_ST_NU.htm?csp=34
Swine flu has swept through about 22 million Americans from April to October, killing an estimated 3,900 people, including 540 children, health officials said Thursday.
The analysis represents the government’s latest effort to assess a viral outbreak that in just six months has flooded emergency rooms and intensive-care beds in at least 48 states that have reported widespread flu cases. With flu season just beginning, an estimated 98,000 people have been hospitalized, according to the Centers for Disease Control and Prevention (CDC).
“We’ve been tracking influenza for decades,” says Anne Schuchat, director of the CDC’s National Center for Immunization and Respiratory Diseases. “What we are seeing in 2009 is unprecedented.”
What the numbers don’t reveal is what will happen next, because no one knows yet when the flu season will hit its peak or how many waves of cases to expect, says Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases.
The new national estimates are extrapolations of data drawn from a CDC emerging-diseases network of hospitals, laboratories and health departments in 10 states and from reports of hospitalizations and deaths, Schuchat says. They illustrate the extent to which swine flu, also known as H1N1, is hitting children, who account for 8 million infections, 36,000 hospitalizations and 540 deaths. In a typical flu season, about 80 children die.
Arnold Monto, a flu expert at the University of Michigan, says the government must rely on estimates such as these because flu tests in doctors’ offices are unreliable and most diagnoses are based on patients’ symptoms. That makes flu reporting sketchy at best.
“We know we are missing cases,” Monto says. “What they’re trying to do with these estimation methods is fill in the gaps.”
Fortunately, most flu cases so far have run their course after a few days of bed rest, fluids and aspirin or acetaminophen to combat fever, doctors say. But the disease has taken a disproportionate toll among pregnant women, diabetics and young people, especially those with neuromuscular ailments such as cerebral palsy and muscular dystrophy.
In a typical flu season, which ends in May, 90% of deaths and hospitalizations involve people 65 and older. The H1N1 outbreak began in April; 90% of those who become infected and need medical care are younger than 65.
Schuchat urges people who appear to be getting severely ill and those with chronic conditions and asthma to quickly see a doctor. Antiviral drugs, such as Tamiflu and Relenza, are most effective when given soon after symptoms set in, she says. What worries her most is that flu season has barely begun: “We have a long flu season ahead of us.”
