1.What percentage of hospitalizations for 2009 H1N1 flu occur in different age groups in the United States? 一般什么年龄的人为此住院。
The percentage of hospitalizations for 2009 H1N1 flu in the United States varies by age group. From August 30, 2009 through October 10, 2009, states reported 4,958 laboratory-confirmed 2009 H1N1 hospitalizations to CDC. The percentage of 2009 H1N1 related hospitalizations that occurred among those 0 to 4 years old was 19%; among those 5 years to 18 years was 25%; among people 19 years to 24 years was 9%; among those 25 years to 49 years was 24%; among people 50 to 64 years was 15%; and among people 65 years and older was 7%. For a graphical representation of this data, please see the chart below.
2.WHAT IS INFLUENZA AND WHAT ARE THE SYMPTOMS OF H1N1 SWINE FLU? 一些普遍的流感症状。
Influenza is a virus that infects the nose, throat and lungs. Seasonal flu typically kills 250,000 to 500,000 people globally, mostly the elderly but also very young children, pregnant women and people with chronic diseases.
H1N1 swine flu is a new strain that appeared in March and became pandemic in June. Like seasonal flu, H1N1 is usually mild and requires no medical care. But H1N1 also differs from seasonal flu because it is more likely to infect children and young people than the elderly.
Most H1N1 symptoms are the same as seasonal flu: fever, coughing or sore throat, runny or stuffy nose, headaches, body aches, chills and fatigue. But swine flu also can cause vomiting and diarrhea.
Dozens of other viruses cause similar symptoms but one hallmark of influenza is a sudden onset of symptoms. An illness that develops gradually is likely to be from another virus.
3.Why is 2009 H1N1 virus sometimes called “swine flu”?为什么叫做“猪流感”呢。
This virus was originally referred to as “swine flu” because laboratory testing showed that many of the genes in this new virus were very similar to influenza viruses that normally occur in pigs (swine) in North America. But further study has shown that this new virus is very different from what normally circulates in North American pigs. It has two genes from flu viruses that normally circulate in pigs in Europe and Asia and bird (avian) genes and human genes. Scientists call this a "quadruple reassortant" virus.
4.What percentage of deaths for 2009 H1N1 flu occur in different age groups in the United States?感染的人，多少人死亡了。
The percentage of deaths for 2009 H1N1 flu in the United States varies by age group. From August 30, 2009 through October 10, 2009, states reported 292 laboratory-confirmed 2009 H1N1 deaths to CDC. The percentage of 2009 H1N1 related deaths that occurred among people 0 years to 4 years was 3%; among those 5 years to 18 years was 14%; among people 19 to 24 years was 7%; among people 25 to 49 years was 33%; among people 50-64 years was 32%; and among people 65 years and older was 12%. For a graphical representation of this data, please see the chart below.
5.Is 2009 H1N1 virus contagious?是否是可以传染的。
The 2009 H1N1 virus is contagious and is spreading from human to human.
6.How does 2009 H1N1 virus spread? 流感如何感染。
Spread of 2009 H1N1 virus is thought to occur in the same way that seasonal flu spreads. Flu viruses are spread mainly from person to person through coughing or sneezing by people with influenza. Sometimes people may become infected by touching something – such as a surface or object – with flu viruses on it and then touching their mouth or nose.
7.What are the signs and symptoms of this virus in people?得流感的症状。
The symptoms of 2009 H1N1 flu virus in people include fever, cough, sore throat, runny or stuffy nose, body aches, headache, chills and fatigue. Some people may have vomiting and diarrhea. People may be infected with the flu, including 2009 H1N1 and have respiratory symptoms without a fever. Severe illnesses and deaths have occurred as a result of illness associated with this virus.
...以上为一些general info about swine flu.
都是问答形式的。
参考资料：cdc