The powerful people who use stone tools were photographed in the Natural History Museum
We have been fighting against new crown html for 43 years. Now the epidemic in various places is anxious. Let’s take a look at the plague virus we have defeated in history, and take advantage of the strength to fight, the new crown virus fades quickly.
1. Plague (Black Death)
Plague is a severe infectious disease. Nowadays, several cases occasionally occur in some areas. The response is timely and there is no transmission. If medical intervention is not carried out, the mortality rate is as high as 30%-60%. I am most afraid of mice, and my hands tremble when I type these two words. The plague is mainly transmitted through droplets, rat flea bites, wounds, and digestive tract. During the three plague pandemics, it once killed more than 25 million people in Europe. We couldn't escape, either, in the late Ming Dynasty, a plague broke out in the capital. The "Chongzhen Records" records: "The epidemic in the capital is 10,000 deaths every day." In the late Qing Dynasty, the plague spread throughout Yunnan Province with the war, causing nearly 1.5 million deaths.
Europe calls the plague Black Death . In the 14th century, Mongolian troops invaded the Black Sea port and gradually spread thereafter. Florence, Italy is the worst-hit city, and the sharp drop in population of 80% is related to the plague. Related literary works can be referred to "December" which describes the tragic situation of the disaster at that time. What is hateful is that during the War of Resistance Against Japan and the War of Resistance Against U.S. Aggression and Aid Korea, the Japanese and American imperialists all released plague bacteria in the Northeast, and these eight ghas. The patriotic health campaign , which emerged in the 1950s, shattered the conspiracy of the US imperialists.
2. Yellow fever
The first time I remember I knew this virus was a news report. In 2017, yellow fever broke out in Brazil, killing nearly 200 people. I checked the International Health Convention and found that this virus is not simple. It is known as the four major international quarantine infectious diseases, together with plague, smallpox, , cholera , mainly concentrated in South America and Africa. The only case in my country is confirmed by returning from Africa from infection. It is not a fault that we are not familiar with it.
Yellow fever originated in Africa Aedes mosquito spread to humans by biting monkeys carrying viruses. In severe cases, infected people will vomit vomit blood , also known as black vomiting. With the development of navigation trade and the war between European countries to plunder colonies, at the end of the 18th century, yellow fever came from Africa to Europe and the Americas. The yellow fever pandemic in Philadelphia, USA, killed 5,000 people.
Aedes
Now with the help of vaccine , the pandemic of yellow fever has become a thing of the past, but behind understanding the transmission route of yellow fever, there is one person who has to mention that she is American nurse Clara Mass. Because animals are not sensitive to the yellow fever virus, the source of evidence that Aedes mosquito is the main transmission route is the human experiments participated by volunteers. In the experiments that require non-immune individuals to participate, Clara Mass signed up and is the only woman among the volunteers. Her motivation for registration is to produce antibodies through experiments to better care for patients with yellow fever. Unfortunately, her condition worsened in the second experiment, proving that it is not feasible to produce resistance through mosquito bites and . Later generations commemorated her contribution to the progress of medicine by issuing stamps.
Commemorative stamps of Clara Mas’ avatar
3. Smallpox
Smallpox was once used as an bacterial weapon for colonial expansion. The victims were millions of Indians and Native Americans, and they used smallpox virus to commit genocide, which was very shameless. At the end of the 18th century, after the promotion of the vaccination method invented by , chenna , humans took the first step to conquer smallpox.
In addition to the new coronavirus this year, the emergence of monkeypox cases has made the whole world unable to sit still. It is the same as the smallpox virus, and the symptoms are similar after complications. The skin is densely filled with pus and dense phobia is trembling. In 1961, my country eliminated smallpox nationwide. In 1980, WHO announced that smallpox had been eliminated worldwide and acne was stopped. Smallpox, as the only infectious disease that has been eliminated, is the emergence of monkey pox considered a king?
小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小小� It's strange.
4. Cholera
I have read two novels, Maugham " Veil ", Marquez "Love in the Time of Cholera". The story background of the former is in a small town in southern China where cholera is erupting, and the latter is in a small town in Colombia where cholera is erupting. The two books describe the onset of cholera virus and the response measures, and the tragic situation after the outbreak of cholera in villages, towns and cities. The book also mentions that cholera is transmitted through unclean water sources, diarrhea and fever are the most obvious symptoms. Literary works reflect reality, and this is true.
In July this year, a cholera epidemic broke out in India, which likes to drink Ganges water, with 181 infected and 5 killed. In the past 100 years, India has more than 38 million people died of cholera. Their hygiene habits are the culprit. In the yellow Ganges, people in the front wash their faces, people in the middle urinate, and people in the back hold water to rinse their mouths, and supplement the periodic table . This picture is so sour. The starting point of cholera transmission is low. Internet celebrity doctor Zhang Wenhong described it as the sickle of the god of death, but we don’t have to be afraid. Although cholera, together with the plague, belongs to the current Class A infectious disease in my country, in recent years, cholera cases in China have basically appeared sporadically and 0 deaths.
5. tuberculosis
tuberculosis is also known as tuberculosis, tuberculosis, "white plague". Its history can be traced back to Egypt 6,000 years ago. Scientists discovered tuberculosis bacteria on mummy . China has realized the infectiousness of tuberculosis in the Han and Tang Dynasties. The female corpse ( Xinzhi ) buried 2,100 years ago in Handui, Changsha, has calcified tuberculosis on its lungs.
Examine Xinpi
Tuberculosis is a chronic infectious disease caused by tuberculosis bacillus . In the era without antibiotics, the mortality rate is extremely high. The world's population of deaths from the disease is as high as 200 million. Historical celebrities who died of this disease include: Mr. Lu Xun, Shelley , Browning, Thoreau , Bronte sisters, etc.
The picture on the right is Mr. Lu Xun's lung X-ray, taken at the Lu Xun Memorial Hall in Beijing
The plagues in the world that cause a large amount of population losses include the Spanish flu, Russian typhus , Anthony plague, and Athens plague. Because there is no my country involved, I will not write it in detail. As long as the time is long enough, what should be gone will disappear, including the new crown. I also look forward to the early demise of the new coronavirus and everyone can return to their normal life before 2019.
#31 provinces increased by 3648+35858 yesterday. 1 new death case # #life#
