Question

用英文介绍一下流感H7N9，能说2分钟左右，不要太多生词，超级急！大家帮帮忙啊！

Answer 1

1. What is the influenza A(H7N9) virus?
Influenza A H7 viruses are a group of influenza viruses that normally circulate among birds. The influenza A(H7N9) virus is one subgroup among the larger group of H7 viruses. Although some H7 viruses (H7N2, H7N3 and H7N7) have occasionally been found to infect humans, no human infections with H7N9 viruses have been reported until recent reports from China.
2. What are the main symptoms of human infection with influenza A(H7N9) virus?
Thus far, patients with this infection have had severe pneumonia. Symptoms include fever, cough and shortness of breath. However, information is still limited about the full spectrum of disease that infection with influenza A(H7N9) virus might cause.
3. How many human cases of influenza A(H7N9) virus have been reported in China to date?
As of 3 April 2013, seven laboratory-confirmed cases have been detected in China. Details of the most current information on cases can be found in Disease Outbreak News.
4. Why is this virus infecting humans now?
We do not know the answer to this question yet, because we do not know the source of exposure for these human infections. However, analysis of the genes of these viruses suggests that although they have evolved from avian (bird) viruses, they show signs of adaption to growth in mammalian species. These adaptations include an ability to bind to mammalian cells, and to grow at temperatures close to the normal body temperature of mammals (which is lower than that of birds).
5. What is known about previous human infections with H7 influenza viruses globally?
From 1996 to 2012, human infections with H7 influenza viruses (H7N2, H7N3, and H7N7) were reported in Netherlands, Italy, Canada, USA, Mexico and the United Kingdom. Most of these infections occurred in association with poultry outbreaks. The infections mainly resulted in conjunctivitis and mild upper respiratory symptoms, with the exception of one death, which occurred in the Netherlands. Until now, no human infections with H7 influenza viruses have been reported in China.

Answer 2

H7N9 is a sub-group of H7 diseases, unsually circulating around birds. Although some H7 viruses are occasionally reported to have infected human in the past, no human infections of H7N9 have been reported until recently in China.
Common syptoms of H7N9 includes severe pneumonia, fever, cough and shortness of breath.
The human infections of H7N9 virus is due to a mutation in the DNA structure of an adaption to grow in mammalian species, as DNA analysis of WHO suggests. The virus had adapted to grow and bind to mammalian cells, and to grow at body temperature close to human's,which is lower than that of a bird's.
Precausions advised to avoid infection includes regular hand washing routine, respiratory hygiene and consumption of thoroughly cooked poultry.

Answer 3

H7N9 type is a new type of bird flu, avian flu in 2013 at the end of march in Shanghai and anhui province took the lead discovery. H7N9 bird flu is the world's first discovery of new subtype influenza virus, has not yet been incorporated into the legal report infectious disease monitoring system in our country, and there is no vaccine to launch in early April 2013. Infected by the virus are early symptoms such as fever, in April 2013 has yet to confirm whether this kind of virus has infected people characteristics of Shanghai, 2 patients died in anhui chuzhou 1 patients are working in nanjing. As of April 5, 2013, 23, Chinese mainlanders H7N9 bird flu cases increased to 16 cases of infection, including six people were killed.
Diagnosis and treatment scheme, points out that human infection with H7N9 avian influenza in the incubation period is generally 7 days. Patients generally characterized by flu-like symptoms such as fever, cough, sputum less, may be accompanied by headache, muscle aches, and the whole body is unwell. In patients after intensive development is rapid, characterized by severe pneumonia, most temperature sustained above 39, difficulty in breathing, can have haemoptysis phlegm; Can rapid progress in acute respiratory distress syndrome, and mediastinal emphysema, shock, sepsis, disturbance of consciousness, and acute kidney injury.