The deceased was an adult male with a moderate build and normal nutritional status.
The skin suffered from extensive bleeding, ecchymosis, cyanosis, and necrosis, and the body appeared purple-black.
Li Ang unloaded another stretcher from the shelf. The second deceased had flea bite marks on his groin lymph nodes, armpits, neck and other places.
Swollen lymph nodes. The surrounding tissues are edematous and congested. There were also suppuration and ulceration of lymph nodes.
The third deceased had pustules and black scabs on the body surface, surrounded by dark red infiltrates, and a hard ulcer at the base, much like cutaneous anthrax.
The fourth deceased...
The fifth deceased...
Li Ang released his mind power and inspected and dissected one corpse after another.
The expressions of Jia Luo and Ouyang Shi beside him became more and more solemn.
Even Yan Yundang and the guards of the Yan Mansion, who didn't know much about medicine, could vaguely see the problem.
The death of the deceased was really tragic.
Many corpses have lumps as big as apples and eggs on their inner thighs and armpits.
There are dense black spots on the arms and feet.
The skin was ulcerated in patches, as if it had collapsed and sunken.
No wonder the air conditioner in the cold room was turned on so strongly. If the temperature was not low enough, a layer of pus leaking from the corpse would have accumulated on the ground.
"It's not like he was put into a cold storage just after death. It seems like he was placed in the deepest part of the corpse pile on the battlefield for several days."
A Yan Mansion guard couldn't help but said softly.
Li Ang glanced at him and didn't say anything. Instead, he asked Ouyang Shi to take out the microscope from the medicine box. He and Qiu Feng used their minds to take some blood, feces, pus from the swelling area, sputum and brain crest fluid for smearing. slices and perform Gram staining.
The so-called Gram stain is a means of identifying bacteria.
Unstained bacteria are difficult to observe under a microscope because of the small refractive index difference with the surrounding environment. After staining, the morphology, arrangement and structural characteristics of the bacteria can be clearly seen, and the bacteria can be classified and identified.
The steps of the staining method are as follows: first fix the smear,
Next, stain with ammonium oxalate crystal violet for one minute.
(Ammonium oxalate is obtained by the reaction between ammonia water and oxalic acid. A small amount of ammonia gas is first prepared by reacting ammonium salt with a strong alkali, and then passed into water to obtain ammonia water. Oxalic acid is purified and pressurized by carbon monoxide and reacts with sodium hydroxide to produce sodium formate, which is then removed by high temperature Hydrogen generates sodium oxalate. Then, oxalic acid is obtained through leading, acidification, crystallization, dehydration and other steps)
Rinse with distilled water, add iodine solution to cover the coated surface for dyeing for one minute. After washing, use absorbent paper to absorb water, add alcohol to decolorize, and then use the natural dye safranin re-extracted from the stigma of saffron flowers for a second counter-staining.
After Gram staining, Gram-negative bacteria will appear red, and Gram-positive bacteria will appear purple-blue.
This is mainly due to the difference in cell wall thickness between the two.
The vast majority of pyogenes are Gram-positive bacteria that can produce exotoxins to poison the human body. Escherichia coli, Shigella dysenteriae, Typhimurium, Pneumoniae, and Pertussis are all Gram-negative bacteria.
The penicillin prepared by Leon before was a specific drug against Gram-positive bacteria, but it was not effective against negative bacteria.
"Did you see it?"
Qiu Feng looked at Li Ang lying in front of the microscope and couldn't help but ask in a low voice.
She had never seen Li Ang look so nervous, even panicked.
Even when facing Suzhou water poisoning or cancer, Li Ang had never been so uneasy. They even asked everyone to stand at the entrance of the cold room and were not allowed to get close, leaving him alone to observe the microscope smears.
"...I saw it."
Li Ang's voice was unnoticeable,
Under the microscope, the pink bacilli are densely packed, like capsules, which is shocking.
Worst outcome.
Yersinia pestis.
Li Ang clenched his fists, silently changed the smear, and continued to observe the samples obtained from pus, sputum, spinal cord, and brain crest fluid.
The result is still Yersinia pestis.
The plague, or the Black Death, is one of the most horrific infectious diseases in human history.
During the era known as the Middle Ages, it claimed the lives of nearly 50 million people in Europe and an estimated 200 million worldwide.
You know, leprosy, which everyone has heard of, can only be ranked as a Class C infectious disease.
Schistosomiasis, gonorrhea, whooping cough, scarlet fever, meningitis,
Even malaria, tuberculosis, and anthrax can only be ranked as Class B infectious diseases.
There are only two Class A infectious diseases that sit at the top of all infectious diseases.
Cholera, and plague.
If malaria is a demon that has coexisted with humans for countless years and parasitized human populations,
The plague, then, is the incarnation of natural disaster, and the highly efficient scythe used by the God of Death to harvest the world.
In the different world where Li Ang's memory comes from, the reason why the plague known as the Black Death suddenly dissipated after killing tens of millions of people,
It’s not because it shows mercy outside the law,
But because there is nothing to kill and nothing to slaughter,
In addition, the black rat, the host of the Black Death, was occupied by the Asian rat Rattus norvegicus.
(The horned leaf flea on Rattus norvegicus is not interested in humans, and with the demise of the black rats, the plague temporarily receded.)
"A rat dies in the east, a rat dies in the west. Seeing a dead rat is like seeing a tiger; a rat dies within a few days, and a human dies like a blockade being demolished. People die during the day, don't ask how many, the sun is seeping and gloomy, and the clouds protect it. The three of them walked less than ten steps, Suddenly two people died crossing the road. People who died at night did not dare to cry. The plague ghost exhaled and the lamp turned green..."
Suddenly, Li Ang seemed to hear shrill cries coming from afar.
He slowly exhaled a breath, took out a fire talisman from the talisman plate, and burned all the glass smears.
He turned around, looked at Qiu Feng and others who were confused, and said slowly: "The Records of Emperor Xiaoling in the Book of the Later Han Dynasty records that there was a great epidemic in March of the fourth year of Jianning, a great epidemic in the spring of the second year of Xiping, and a great epidemic in the spring of the second year of Guanghe." There was a great epidemic in the spring of the fifth year of Guanghe, and a great epidemic in the spring of the second year of Zhongping.”
Everyone's expression changed at the same time,
Li Ang was talking about the great plague that occurred in the late Eastern Han Dynasty. During the 21 years of Emperor Ling's reign, five major plagues broke out, which directly broke the Han Dynasty's ability to withstand it, led to frequent peasant uprisings, and finally added the last straw to the demise of the Han Dynasty.
According to rough statistics, if we add in the continuing malaise during the Cao and Wei Dynasties,
Continuous plagues (probably influenza) killed more than half of the population, killing tens of millions.
So much so that even now, Yan Yundang, Qiu Feng and others still feel a cold chill that goes deep into their bones when they think of it.
"Is it really that bad?!"
Yan Yundang asked in a deep voice. He is an old pawn who has lived since the time of the Holy Queen and has seen many plagues in various places. It is really unimaginable that there is anything more desperate than ten rooms and seven empty spaces.
"Multiply the most terrifying plague you have ever seen by ten or a hundred times, and it will be almost equivalent to the current epidemic."
Li Ang climbed up the frost-covered steps of the cold room step by step, and said slowly: "Be prepared, the plague is coming."
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