1. 1959, an adult man found a strange virus during a plasma test in the present Republic of Congo, but he didn't know the existence of HIV at that time.

2. 1969, St. Louis, USA, an African-American teenager aged 15 died of sudden illness, and HIV virus was found in his body tissue.

3. 1976, a Norwegian sailor died of illness and HIV was found in his body.

4. 198 1 year, HIV was found in five homosexuals in Los Angeles, which means that people have officially discovered the large-scale spread of HIV.

5. 1983, French scientist Montagni isolated a new virus from the plasma of a homosexual patient with pneumocystis carinii, becoming the first scientist to find the pathogen.

1February, 999, French, British and American medical scientists jointly released an exciting news in Chicago: after years of research, the origin of HIV was finally clarified. As we all know, behind this news is an amazing contemporary scientific legend.

According to the World Health Organization's Epidemiology Weekly, from 198 1 the first case of AIDS was found in the United States to the end of 1998, the number of people infected with HIV or AIDS worldwide was 35 million, and the number of new infected people was 16000 every day during 16000. Although 10 years, doctors all over the world have racked their brains for the treatment of AIDS and made great progress in drug treatment.

But at present, there is no effective medicine to cure AIDS; Many researchers settle for the second best in order to develop an effective vaccine against HIV, but unfortunately, no breakthrough has been made so far. In the case that "chasing and intercepting" doesn't work, people have to find another way. Where does AIDS come from? If we find the source, we may have a bright future. So with the unremitting efforts of medical scientists, we finally got the precious "first drop of blood" to spread HIV. Subsequently, European, American and African medical scientists jointly staged an unprecedented "missing people" drama on the African stage-

■ The disaster of the years

The story of The Missing Man has to be told from the beginning. 1959 in March, Zaire, located in western Africa, rebelled everywhere, and the situation was turbulent. Many people could not make ends meet, so they had to sell their blood to make a living. On a hot afternoon, a strong-looking black man appeared quietly. He came to a hospital in Kinshasa, the capital of Zaire, and asked to sell blood. After pumping 200 ml of blood, he forgot to rest, grabbed the money and hurried away. When the medical staff turned to ask him to leave his name and contact address, he had gone without a trace. Since then, he has mysteriously disappeared from the earth like "whisperd".

A flick of your finger. Nearly 30 years later, people have long forgotten this unknown blood donor, but he suddenly became a "world-class" celebrity overnight. One day in the late 1980s, a blood chemist in that hospital found a glass bottle lying in an unnoticed corner of the blood bank while cleaning the blood bank. He subconsciously picked it up and looked at it. It is this casual glance that makes this glass bottle, which has been refrigerated for more than 20 years, regain its light like a devil bottle found by a fisherman. His heart jumped when he saw that the blood drawing time marked on the glass bottle was 1959. It seems that at that time, he decided to re-analyze the composition of this "old thing". When the automatic analyzer typed out the test results, he was suddenly shocked: "Oh, my God, is this true?" He couldn't believe his eyes. The test report clearly pointed out that the blood left by this bottle of 1959 actually contained the first HIV: HIV- 1. You know, the first known AIDS case was diagnosed in 198 1 year, and now the vast majority of AIDS cases in the world belong to this virus. Excited, he did another test and the result was exactly the same as last time. Only then did he believe that a miracle had happened. It turned out that the blood left by "whispering" was simply examined by the doctor at that time. In addition to a large part of clinical use, some of them are put into glass test tubes for refrigeration. It is the unintentional action of laboratory technicians that "caught" the "first drop of blood" that doctors all over the world are looking for to spread HIV. The blood of "whispering" delighted medical scientists, who saw a glimmer of light to solve the mystery of AIDS.

After the news of the "first drop of blood" of HIV came out, it immediately caused a strong "earthquake" in the medical field. Some western countries ask Zaire government to cooperate with them, and at the same time ask other African countries to look for mysterious "secret words" with them. Although they estimate that whisperd, who doesn't know where he came from or where he went, has already died, they think it's good to find his body, because medical scientists know that he has immeasurable scientific research value, and maybe finding him will lead to the golden key to solving the mystery of HIV.

As a result, a large-scale "missing people" drama was staged on the vast land of Africa. However, that "whisper" played hide-and-seek with people like the erratic HIV, although people thought of many ways: offering a large sum of money for providing clues, offering a large sum of money for finding the remains, and mobilizing people's enthusiasm, but found nothing. Unwilling scientists also used the most famous detectives and experienced military and police personnel to participate in the search, and even used high-tech satellite positioning technology. However, after several twists and turns, it still cost a lot of money. Not only did he not find his hiding place, but even the exact news about him was not obtained.

The world is full of miracles. Maybe it's providence or coincidence. Just when scientists were frustrated by missing the opportunity of "whispering", an amazing news made them excited again. Almost at the time when people were looking for the mysterious "secret language", the US military conducted AIDS testing research on orangutans. They were surprised to find that an orangutan named "Marilyn" had "simian immunodeficiency virus". They investigated its life history, and the result was even more surprising: the chimpanzee was captured by the US military in a mountainous area of West Africa shortly after its birth and was named "Marilyn" as a pet. 1985, "Marilyn" and other orangutans were tested for AIDS, and the test results immediately made people "sit up and take notice" of this humble orangutan. People are "nervous" and dare not neglect. They immediately "check the name" and then "isolate the review". Marilyn, who has been at ease for more than 20 years, can't stand this "unexpected encounter". Before the scientists started, she died quietly on a quiet night. How can we let the diploid orangutans go? After all, they are "mysterious visitors"? The researchers carefully dissected its body and took out two "stillborn" orangutans from its belly, but surprisingly, the AIDS virus that scientists were looking for was not found in the orangutans. "Is there such a strange thing?" They were surprised and suddenly inspired by generate: Maybe this orangutan is the source of AIDS. Since then, scientists' research on AIDS has entered a new world.

Sure enough, along this line of thinking, more and more scientific research achievements are presented to people. Chimpanzees living in Africa are the source of AIDS, and it is they who infected 35 million people around the world with HIV, and there is no medicine to prevent or cure this virus at present. However, the battle is not over yet, and scientists have not had time to taste the joy of staged victory. Another question made them frown-

■ The fly's fantasy

The air of flies is that they spread germs everywhere when they are safe.

If we figure out why chimpanzees can take it calmly in the face of vicious HIV (even if they are infected), it will undoubtedly be of great significance for human beings to prevent and treat AIDS.

A few days ago, researchers at the University of Alabama in Birmingham announced that they had convincing evidence that HIV originated from gorillas in West Africa. They used molecular analysis technology to study four virus samples and found that three of them are very similar to HIV in human body in genetic characteristics. These three viruses were collected from one of the four branches of African chimpanzees, which belong to Cameroon, Equatorial Guinea, Congo and Central Africa. Years of observation found that human AIDS first occurred here. Moreover, the frightening Ebola River, which repeatedly "makes" viruses, also flows here silently day and night. According to relevant scientific research results, the Ebola virus that has repeatedly "challenged" humans is also a "masterpiece" after apes play.

In fact, scientists have long suspected that chimpanzees are the "culprit" in the spread of AIDS, just assuming that scientific verification is needed. He Dayi, a Chinese-American professor at Rockefeller University's AIDS Research Center, who is famous for "cocktail therapy", once said that humans may have been infected with this horrible virus as early as the forties and fifties. Medical scientists in Europe, America and Africa cooperated closely. After extensive research on the "first drop of blood" of the "mysterious visitor", they thought that this person might be an HIV carrier 10 years before blood drawing, so they concluded that the first unknown AIDS case should have appeared at least 50 years ago. At the beginning of last year, Beatrice Hahn, an AIDS expert at the Centers for Disease Control and Prevention in the United States, also asserted according to their research results that HIV can definitely occur in West Africa after entering the human body from chimpanzees. He said that local aborigines may hunt chimpanzees and other animals for food, get injured accidentally in the hunting process, get infected with the virus, and then "a single spark can start a prairie fire" around the world and eventually become an "eternal flame".

When the medical research team, mainly French experts, announced the theory that "chimpanzees are the source of HIV" in February last year, it also stressed that Africans are very likely to be scratched by chimpanzees and other prey when hunting and slaughtering prey, and the HIV they carry opens the way for entering the human body. They also pointed out that chimpanzees have been carrying this terrible virus for hundreds of thousands or even millions of years, but strangely, chimpanzees are not sick. What makes them practice a "indestructible body" and give them the natural ability to resist HIV? Perhaps there is a "panacea" that can turn decay into magic? How chimpanzees are infected with HIV ... This "100,000 Why" puzzles scientists and fascinates them. In short, as long as the eternal mystery of how chimpanzees overcome HIV infection is solved, human beings may get the magic weapon to win the battle of AIDS, just as Alibaba got the "open sesame" spell and entered the inexhaustible treasure house, so that human beings can completely overcome this "century-old disease" with strong infectivity, rapid spread and difficult treatment.

The outstanding contribution of scientists shows that after a long night, the morning star has been shining in the east. Just like the life-and-death struggle on the football field, at the beginning, the AIDS virus suddenly became hidden and deadly, which caught the unprepared scientists off guard, and suddenly they went haywire and watched the goal fall. Fortunately, at present, it is no longer an era of "Hua Tuo's helpless bugs". Scientists who have not shown weakness quickly cheered up and quickly organized effective counterattacks. Brave scientists have crossed many obstacles, got rid of all kinds of fetters and pushed forward layer by layer. They bravely attacked the football to the restricted area. Arrogant HIV has long been wiped out under the powerful impact of science. In the face of a huge empty net, the victory and defeat have been divided, and all that remains is the sword of scientists to seal their throats. If this is the case, people have every reason to believe that the complete surrender of AIDS is just around the corner. Now we are all standing up and ready to cheer for the glorious moment!