What is swine flu? 什么是猪流感？
what is swine flu? Swine flu is a respiratory disease of pigs caused by type A influenza viruses that causes regular outbreaks in pigs.Humans are not usually affected, although such infections can happen. Swine flu viruses have been reported to spread from person-to-person, but in the past, this transmission was limited and not sustained beyond three people.什么是猪流感呢？猪流感是一种由A型流感病毒引发的猪呼吸系统疾病，该疾病通常在猪群中暴发。人群通常不会被感染，偶有碰仿漏感染情况发生。以往报道称猪流感病毒可在人与人之间传播，但是在过去，这种传播是有限的而且不会持续传播超过三个人。大绝
The virus responsible for the current outbreak, however -- strain H1N1 -- is contagious between humans, although it's unclear just how easily that happens. Flu viruses are spread mainly from person to person through coughing or sneezing of people with influenza. Sometimes people may become infected by touching something with flu viruses on it and then touching their mouth or nose.猪流感病毒引发了目前的疫情，只有H1N1株病毒才在人群中有传染性，但是并不清楚为什么传播会如此容易的发生。流感病毒主要通过携带者咳嗽或者打喷嚏来完成人与人之间的传播，有时人也会因为接触流感病毒的污染的物体后再摸自己的嘴或者鼻子而被感染。
Symptoms of the swine flu are the same as those of other types of flu: fever, cough, sore throat, body aches, headache, chills and fatigue, all of which may be more severe in those who are already sick or have chronic medical conditions. To prevent it, we need hand-washing, plenty of sleep, and drinking plenty of fluids.感染猪流感病毒后的症状和其他类型流感一样：高笑烂烧，咳嗽，喉咙痛，全身疼痛，头痛，寒战，疲乏无力，那些体弱或者有慢性病的人这些症状会更加严重。为了避免感染，人们要勤洗手，保证睡眠充足而且要多喝水。
楼主酌情删减
该病的发病率高，潜伏期为2～7天，病程1周左右。病猪发病初期突然发热，精神不振，食欲减退或废绝，常横卧在一起，不愿活动，呼吸困难，激烈咳嗽，眼鼻流出黏液。如果在发病期治疗不及时，则易并发支气管炎、肺炎和胸膜炎等，增加猪的病死率。
病猪体温升高达40℃～41.5℃，精神沉郁，食欲减退或不食，肌肉疼痛，不愿站立，眼和鼻有黏性液体流出，眼结膜充血，个别病猪呼吸困难，喘气，咳嗽，呈腹式呼吸，有犬坐姿势，夜里可听到病猪哮喘声，个别病猪关节疼痛，尤其是膘情较好的猪发病较严重。
剖检可见喉、气管及支气管充满含有气泡的黏液，黏膜充血，肿胀，时而混有血液，肺间质增宽，淋巴结肿大，充血，脾肿大，胃肠黏膜有卡他出血性炎症，胸腹衫凯镇腔、心包腔蓄积含纤维素物质的液体。
流行特点 各个年龄、性别和品种的猪对本病毒都有易感性。本病的流行有明显的季节性，天气多变的秋末、早春和寒冷的冬季易发生。本病传播迅速，常呈地方性流行或大流行。本病发病率高，死亡率低（4%～10%）。病猪和带毒猪是猪流感的传染源，患病痊愈后猪带毒6～8周。
临床特征 本病潜伏期很短，几小时到数天，自或粗然发病时孙碧平均为4天。发病初期病猪体温突然升高至40.3～41.5℃，厌食或食欲废绝，极度虚弱乃至虚脱，常卧地。呼吸急促、腹式呼吸、阵发性咳嗽。从眼和鼻流出粘液，鼻分泌物有时带血。病猪挤卧在一起，难以移动，触摸肌肉僵硬、疼痛，出现膈肌痉挛，呼吸顿挫，一般称这为打嗝儿。如有继发感染，则病势加重，发生纤维素性出血性肺炎或肠炎。母猪在怀孕期感染，产下的仔猪在产后2～5天发病很重，有些在哺乳期及断奶前后死亡Owe the morbidity falling ill height, incubation period is 2 ~ 7 days, course of disease 1 week or so. Disease pig morbidity initial stage fever heat , the spirit are greatly depressed , anoretic or useless superb , common accumbency is unwilling to exercise , to breathe difficult , fierce tussis together , abruptly, sticky eye nose outflow liquid. If scheduled time cures a block of wood in time in morbidity, then easy to be complicated by English disease , pneumonia and pleurisy etc., case fatality rate increasing a pig's. The disease pig temperature power-up amounts to 40 ~C ~ 41.5 ~C, the spirit is depressed , anoretic or food , muscle pain, are not ready to stand, the eye and the nose have sticky liquid outflow , eye conjunctiva hyperaemia , the individual disease pig dyspnea , the abdomen style taking a breathe , coughing , presenting are breathed , have dog seat posture, may hear disease pig asthma sound at night, individual disease pig arthrosis pain, fairly good feeling pig morbidity is graver especially fat. Analyse check up It can be seen that the throat , air tube and bronchus are full of the sticky liquid containing air bubble , sticky film hyperaemia , swelling , have blood intermittently thoughtlessly, the lung mesenchyme increases width , enlargement of lymphnodes , hyperaemia , splenomegaly , the sticky film of stomach intestine has the catarrh bleeding nature inflammation , the chest abdominal cavity , the pericardium cavity accumulate the liquid containing cellulose matter. Pig perceptual easy to have to virus each age of characteristic , sex and breed being in popular. Fall ill originally obvious seasonal characteristic being popular for having, changeful autumn of weather is last , early spring and chill winter are easy to happen. Prompt , common disease propagation memorial local characteristics is popular for or is popular for greatly. This disease morbidity high , death rate is low (4% ~ 10%). That the disease pig draws as well as poisoning a pig is pig flu source of infection , the pig takes poisoning 6 ~ 8 cycles after diseasedness is recovered. Clinical this characteristic disease incubation period is very short , several hours arrive at a several day , is 4 day equally when coming on naturally. The morbidity initial stage disease pig temperature rises abruptly till 40.3 ~ 41.5 ~C, the anorexia or appetite abolishes collapsing superb , exceeding in poor health and even, often sleeping. Polypnea , dyadic breath of abdomen , paroxysmal tussis. Mucus flowing out of the eye and the nose, nose secreta brings blood along sometimes. The pig pushes against a disease lying to be difficult to move together, touch muscle rigid, pain, diaphragm spasm , the breath pause and transition in rhythm or melody appear , say this is to hiccup in general. Increase weight if having succeeding hair infection, is patient's condition , cellulose bleeding nature pneumonia or enteritidis happened. Sow piglet being affected by , product down in gestation period duplicates each other very much in 2 ~ postpartum 5 days morbidity , dies a little bit from start to finish in the lactation period and ablactation
Up to April 27, the Mexican nation pig flu doubtful patient reaches over a thousand people, the casualty climbs to 103 people. And 22 examples confirmed that dies in the pig flu, 81 examples die doubtful of the pig flu. Meanwhile, also had more than 20 people in the US to infect the pig influenza virus. Obviously, this virus is disseminates between the human and the human. The US already announced that carries on the public health emergency, the World Health Organization is holding the emergency meeting, decided whether to announce this flu starts the popular possibility. what has sarcastic is, after many years pay attention to the H5N1 bird flu, the anxious this kind of new virus is one kind of pig virus, is H1N1. the influenza virus names, H which and N by its surface's two kind of main proteins condenses. They because of the animal which infects different have the different variety. Comes from the pig in this new virus's H, but other genes come from the bird flu and human flu. The US Federal state disease control and the prevention center said that this mix virus “is unusual.”This center's Director Richard ・ time of color confirmed that is similar in the Federal state disease control and the prevention center examination's Mexican pig influenza virus's sample and this American virus. Time of color indicated that this virus certainly is one kind of new virus, can cause the serious disease, and very easy to disseminate and the proliferation, is one kind of popular disease, possibly will be popular. the Federal state disease control and the prevention center science and public health Director Anne ・ Si its Chatt indicated that the American pig influenza virus has from North America pig, the European pig, the feather and humanity's mix gene sorting. Its surface's H protein circulates merely between the pig, is the humanity immune system has not seen to one kind of protein, is also the thing which flu must. the pig flu's gravity has in a big way? Will disseminate far? According to analysis by experts, its gravity had not known at present, but dies according to Mexico of the pig flu's patients is the young people and escapes by luck in the human flu, infers this virus to be very fierce. The thunderbolt investigators were understanding at present had how many people to infect the pig influenza virus, some how many person serious illness, thus knew that this flu had bad. Now the people are globally run, therefore this virus impossible not to you at present life place.
原意：截至4月27日，墨西哥全国猪流感疑似患者达上千人，死亡人数升至103人。其中22例已确认死于猪流感，81例疑似死于猪流感。与此同时，在美国也有20多人感染了猪流感病毒。显然，此病毒是在人与人之间传播的。美国已经宣布进行公共卫生紧急状态，世界卫生组织正在召开紧急会议，商定是否宣布此流感开始流行的可能性。
具有讽刺性的是，多年关注H5N1禽流感之后，令人担忧的这种新病毒是一种猪病毒，为H1N1。
流感病毒以其表面的二种主要蛋白来命名，缩写的H和N。它们因感染的动物不同而有不同的变种。在此新病毒中的H来自猪，但其它一些基因则来自禽流感和人类流感。美国联邦政府疾病控制与预防中心称此混合病毒“非常不同寻常。”该中心的主任理查德・倍色尔证实在联邦政府疾病控制与预防中心检测的墨西哥猪流感病毒的样品和此美国病毒非常类似。倍色尔表示，此病毒一定是一种新病毒，能导致严重的疾病，且很容易传播和扩散，是一种流行疾病，可能会流行起来。
联邦政府疾病控制与预防中心科学与公共健康主任安妮・斯其查特表示，美国猪流感病毒具有来自北美猪、欧洲猪、禽类和人类的混合基因排序。其表面的H蛋白仅仅在猪之间循环，是人类免疫系统从来没有看到一种蛋白，也是流感所必需的东西。
猪流感的严重性有多大？会传播多远？据专家分析，其严重性目前还不知，但据墨西哥死于猪流感的患者都是年轻人且幸免于人类流感，推断此病毒很厉害。突发事件调查人员目前正在了解有多少人感染了猪流感病毒，有多少人得了重病，从而得知此流感有多糟糕。如今人们都是全球性地跑，因此这一病毒不可能不到你目前生活的地方来
What is swine flu?猪流感是什么
It is a contagious respiratory disease of pigs caused by type A influenza viruses. Pigs are hit by regular outbreaks. There are many different types of swine flu and the current cases involve the H1N1 strain of type A influenza virus.
How do humans catch it?
While people do not normally catch it, humans can contract the virus, usually if they have been in close contact with pigs. It is also possible for the constantly changing infection to spread from person to person, which has happened in the latest outbreak. Experts believe it spreads in the same way as seasonal flu - through coughing and sneezing.
What are the symptoms?猪流感的症状是什么？
The symptoms of swine influenza in people are similar to the symptoms of regular human seasonal influenza infection and include fever, fatigue, lack of appetite, coughing and sore throat. Some people with swine flu have also reported vomiting and diarrhoea.
What is the difference between swine flu, avian flu and the flu commonly seen in the UK during the winter?猪流感和禽粗拍流感的区别，以及与碰乎冬天的笑凳悉流感区别？
Influenza viruses are commonly circulating in the human and animal environment, with different strains causing illness in humans, bird and pigs. Seasonal influenza is caused by viruses that are adapted to spread in humans. Humans have some natural immunity to the strains that are in common circulation, and this immunity can be boosted by immunisation with a vaccine. Avian influenza is caused by influenza viruses adapted for infection in birds. Similarly, swine influenza is caused by influenza viruses adapted for infection in pigs. These illnesses all cause the same respiratory symptoms in sufferers and can be passed between one another.