The first type H1N1 influenza epidemic situation three is asked

The first type H1N1 influenza epidemic situation three is asked
The first type H1N1 influenza epidemic situation three is asked
Staff reporter Meng QingPu Ask: Whether it is a violent trend that spreads at SARS first type H1N1 influenza, it is very apt to let people remember SARS of 2003, compared with SARS this influenza epidemic situation, nothing different, what something in common is there? The Chinese sweet gum of Li Meng, Vice President of Zhongshan University thinks, SARS was that the unknown pathogen haunted at that time, now the pathogen of the first type H1N1 influenza, spread route are relatively clear, help to prevent and control effectively. In the curing influenza medicine that has use all the time, reach Philippines, wait for medicine have certain sensitiveness too. He said, in initial stage of resisting SARS in 2003, we did not know the cause of disease, spread route, protected clinically insufficiently, much medical personnel is in exposing state while rescuing patients, the first hemoptysis of some patients, the blood with virus was sprayed onto doctor, nurse face directly, so the medical personnel's infection rate was higher at that time. But should be to first type H1N1 influenza now, we have already known their routes of spread, can fully do the safeguard procedures well, find, diagnose, treat as to suspicious patient early early early, can be in order to reduce infection rate and case fatality rate notably. Zhong NanShan, academician of Chinese Academy of Engineering, thinks when being interviewed by media, the same place of first type H1N1 influenza and SARS, it is caused that the virus is infected at first, secondly, it is similar to infect the route. Get up disease to be too similar, the intersection of influenza and the same symptom, appear feverish aching, having sore throat by the intersection of muscle and acid later, further may amalgamate lung, infect, appear whole body many organs depleted, etc. Different places lie in, first type H1N1 is compared with SARS, when relatively prevailing in middle period, the former's appeal is not as strong as the latter, toxicity is not so strong. According to whole world, SARS case fatality rate up to 10%. In addition, SARS does not have medicine that can be managed, but if first type H1N1 influenza finds, treats in early days in early days, the words using medicine in two or three days, can inhibit the virus effectively. The expert of the national influenza centre analyzes, the present data reveal, the first type H1N1 influenza case fatality rate is lower than SARS, the reason perhaps because SARS is the new virus that has never appeared, and first type H1N1 influenza is epidemic disease that has appeared before this, there are antibodies in the human body more or less, have strengthened immune ability. The spread of first type H1N1 influenza virus needs appropriate climate and environment, it is very difficult to survive under the high-temperature state. What worry about is at present, this kind of virus will produce new variation in the course of propagating. "Second round of epidemic situation will present and when appear, at present very much difficult to confirm, need strengthening and keeping a lookout, can't adopt a casual attitude. " Two asks: Will develop into the fourth influenza in the last hundred years and prevail to enter the 20th century big, it was prevailing that successively greater influenza happens 3 times in the whole world. From 1918 to 1919 loud to prevail influenza ' Spain's influenza H1N1) ,Begin with the east of U.S.A., is considered to be in modern history the most serious disease is prevailing, population (about 500 million people) of the about 1/3 of whole world Infect and clinical symptom appears, 20 million people among them die of influenza 40 million people. From 1957 to 1958 loud to prevail influenza ' Influenza H2N2 in Asia) ,Beginning with the west of Kweichow Province of our country, about 2 million people in the world die of influenza. From 1968 to 1969 loud to prevail influenza ' Hong Kong influenza H3N2) ,Began with our country Guangdong Province and Hong Kong area, endangered minimum influenza and prevailed big in the 20th century, about 1 million people in the world die of influenza. WHO release the intersection of influenza and early warning information so far, can develop into the intersection of influenza and large prevailing conjecture never about epidemic situation this dispel from will it be the end April. The national influenza Guo YuanJi, researcher of centre says, the emergence with great and prevailing influenza should meet several preconditions: It is inferior type to present the new virus, crowds generally have no immunity; The new virus must be able to duplicate and can cause serious disease in the human body; The new virus must realize effective interpersonal spread, successor can maintain and infect the chain the effective person continuously, therefore lead to the fact that breaks out in the community. At present, the first type H1N1 influenza epidemic situation has already met these conditions, but see with the spread speed, should not spread so slowly. According to expert's analysis, according to the past experience, influenza is some and prevailing will not be too long, generally lasting about one month will pass by, but may present the second wave, prevalence of third wave, and popular place may change. For example, influenza was great while prevailing in 1968, new inferior influenza appears to prevail in our country Guangdong and Hong Kong in July in the same year, but did not involve the whole world from 1969 to 1970. But the traffic condition at that time is and different now, the traffic was developed now, the spread speed will be accelerated, if there are the second wave, third wave prevailing influenza, it is sure not to and last such a long time like the interval of before. In addition, influenced by climate, influenza virus is not apt to travel in summer, a lot of countries of Northern Hemisphere have already begun to enter summer now, so, more optimistic view is at present, it is big and prevailing that this wave of influenza will not present like in history at least. Three asks: The method prevents the virus from making a variation the ginger of institute of public health of Fudan University celebrates five professors to think, a lot of animal carry the intersection of people and animals and ill pathogen together without having illness coming on only, once infecting the mankind may have illness coming on. For example pig, wild boar, deer,etc. can be regarded as the natural host of the fifth type hepatitis virus; The mankind eats on these surfaces the virus-infected animal can be infected with healthily, in fact. And some poultry's domestic animal and wild animal may be the multi-type " New now " With " fire again " Potential host of infectious disease, pig and horse that especially closely related with with the human life and production. WHO has pointed out, in Asia, while people raise the chicken, duck, often raises pigs in the same field too. In and the respiratory tract of the pig and concurrently someone influenza virus and bird flu virus invade the receptor adhered to. So, influenza virus travels among different animals, it is extremely apt to change the genetic structure, encourage the variation of the virus gene. This first type H1N1 influenza virus is similar to Spanish influenza virus in 1918, contains many kinds of genetic fragments of birds, pig and the people influenza virus in the virus nuclear acid, make the human immune system unable to discern, thus lead to the fact in the crowd that prevails. Zhong NanShan thinks, avoids the mutant key to the virus, how can avoid the travelling on a large scale of virus. Extensive spread takes place, the apter to morph the virus is, just like SARS of those years, the virus is not so strong at the beginning, as the epidemic situation is propagated, what the toxicity of the virus changes is stronger and stronger. It is infective whether people can control disease, does not allow it to make a variation, the most key problem is not to allow great Fan Enclose and spread, can reduce the emergence of the virus variation situation in this way.


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