Legion disease -the ghosts are not scattered for 46 years

Source: Science Popularization China

According to the US Fox New York Channel, in May this year, the Legion's disease epidemic was outbreak in the Branks district of New York. Investigators inspected the Legion bacteria positive on the four cooling towers in the place. A kind of illness is named after the "Legion", which makes people guess it is associated with the army. This does start with a group of American veterans.

In 1976, at the time of the 200th anniversary of the founding of the United States, the veterans were approved by the veterans at the "Straffu Ferry" hotel in Philadelphia. , Vomiting, cough, systemic fatigue and other symptoms, and even 36 residents near the hotel have similar symptoms, as if they had encountered a flu, but 90%of patients had signs of pneumonia. In the end, there were 221 confirmed cases of unknown diseases and 34 patients died. This explosive news covered a thick layer of shadow at the time.

At that time, the headlines of the major newspapers were "mysterious Philadelphia epidemic", but no laboratory could detect the cause. At the beginning of the investigation, the researchers pointed the goal to the flu. After excluding the suspicion of flu, they tested the possibility of 17 metal cities. Later, health officials also checked the possibility of other toxins or toxic gases. Some scientists have called for the suspension of all microbes' laboratories because they are worried that these laboratories may be the source. Government officials warned: "A devastating epidemic may be hit without any warning." To this end, the US Ford government is preparing to vaccinate new influenza vaccine vaccines for each American.

After half a year of the epidemic, medicalists separated the pathogenic bacteria from the lung tissue of the deceased, but it was not found before. It was confirmed that it was a pathogenic microorganism that existed in the faucet and sink. Laboratory studies have shown that high water temperature is a favorable factor for this bacterial growth and reproduction. The investigators turned the direction to the air -conditioning system of the "Straffu Ferry" hotel. As a result, although the water in the cooling tower was supplemented by water supply from municipal tap, the water quality had deteriorated after continuous circulation evaporation. When the epidemic outbreak is in the summer, the air conditioner is frequently used, the heat produces is much heat, and the temperature of the cooling tower rises. The bacteria grow and reproduce active. After entering the air conditioner system, the air -conditioning system is blown out with the air -conditioning, infected with everyone.

Because most patients are members of the legion, this germ is named "Veterium Permiha", referred to as "Legion Baches", and the disease is also known as "Veterans Diseases", referred to as "Legion Diseases". In 1978, the U.S. Centers for Disease Control and the World Health Organization officially named it "Puzzle Corps" at the International Academic Symposium of the Legion Diseases.

Legion bacteria mainly come from soil and sewage. The airway droplets that can be spread through cough, sneezing, speaking, etc. in the air can cause two types of diseases. One is pneumonia, manifested as fever, cough and lung inflammation. In the later period, conscious coma, delirium, even shortness of breath, respiratory failure, etc.; The other is non -pneumonia type, which is mild in condition. Clinical symptoms such as muscle soreness, also known as Pomiha heat.

Since the first discovery, the United States has broke out many of the legion diseases many times, such as 2014-2015, the disease epidemic in Flint, Michigan, USA. Nearly 100 citizens were infected and 12 people died. In November 2019, in a Disneyland in California, the cooling tower of the two air -conditioned air conditioners caused 15 tourists to suffer from legion and died. The United Kingdom, France, Australia, Singapore, Canada and other countries have also reported that the legion disease has been discovered. From 1995 to 2005, the U.S. Centers for Disease Control and Prevention reported a total of 23076 cases of league diseases; from 2011 to 2015, the European Disease Prevention and Control Center reported 30532 cases of military disease cases.

In 1982, Nanjing, my country, discovered the case of the legion for the first time. Since then, there are reports in Fujian, Zhejiang, Sichuan, Guangdong, Shandong, Heilongjiang, Hebei, Liaoning, Xinjiang and other places; There are also cases in Shanghai. After the disease occurs, the air -conditioning systems and surfaces of hotels and office buildings can often be detected in relevant hospitals, shopping malls, subway stations, theaters. Hotels and office buildings.

The legion of the legion can occur throughout the year. Especially in summer and autumn, the elderly, children and those with low immune function are more susceptible. But today, the treatment of the legion disease is still a world problem, and no effective treatment measures have been found. For individuals, regular detection and consumption of the air -conditioning system are crucial, especially before the air conditioning is opened for the first time in summer. In addition, physical exercise needs to be strengthened, paying attention to diet hygiene, developing good living habits, and enhancing the body's immunity. (Song Tianli) ▲

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