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Infectious Diseases In Human History, The cause of disease：When a human is…

- - - - 2019-Today
        
        COVID-19
        
        Novel Coronavirus is a novel coronavirus strain that has never been found in humans before.
        
        It's more infectious than SARS.
      - SARS
        
        SARS occurred in Guangdong, China in 2002 and spread to Southeast Asia and even the whole world. It was not until the middle of 2003 that the epidemic was gradually eliminated.
        
        Symptoms: dyspnea, fever, general pain and weakness.
        
        General treatment: isolation, symptomatic support, regular review of chest X-ray, as well as heart, liver and kidney function, oxygen therapy.
        
        Drug therapy: use of glucocorticoids, use of antibiotics.
        
        Acute phase of treatment: mainly symptomatic support treatment. To strengthen the dynamic monitoring of severe patients.
        
        At present, there is a lack of effective antiviral drugs for pathogens, mainly isolation treatment, symptomatic support treatment.
        
        General treatment: bed rest, according to the disease monitoring indicators, according to the change of oxygen saturation, timely give effective oxygen therapy measures.
        
        Drug therapy: antiviral therapy and antibacterial therapy. Glucocorticoid should be used in a short term (3-5 days) under the guidance of the doctor according to the degree of dyspnea and the progress of chest imaging.
      - It begins in a mammal, a wild animal, passes through a host, and infects humans.
        
        In 2003, 8,422 people were infected worldwide, resulting in 919 deaths, with a fatality rate of 11%.
        
        The SARS epidemic has caused a total loss of us $25.3 billion to the global economy, with consumption-oriented industries, such as tourism, retail, catering and transportation, being most affected.
        
        The SARS crisis promoted the further improvement of medical security undertakings, health policies and facilities, and the concept of health was also deeply rooted in people's minds.
        
        What makes us proudest is that in the face of disease, nations and peoples have come together to face challenges together. The two challenges have strengthened our national spirit and social cohesion.
        
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        So far, the number of people diagnosed with COVID-19 globally has reached 15,313,080, with more than 620,000 deaths.
        
        Change the structure of globalization economy, the wave of economic globalization formed in decades will be impacted.
        
        The most obvious impact is the sudden death of the service industry and the impact on the medical industry in the short term.
        
        In addition to the impact on businesses, the decline in consumption and the economy is bound to affect employment.
        
        The economic impact of the COVID-19 was more than 100 times greater than that of SARS.
    - - Small pox is a virulent infectious disease caused by smallpox virus infection in humans. After recovery, immunity is acquired for life. Smallpox is one of the oldest and most deadly infectious diseases.
        
        Symptoms: chills, high fever, fatigue, headache, limbs and back pain.
        
        General treatment: strict isolation.
        
        Drug therapy: Tecovirimat was the first antiviral drug for smallpox, approved for use in the United States in July 2018.
        
        Sun Simiao, a famous Doctor in Chinese history, prevented smallpox by applying pus derived from smallpox oral sores to the skin.
        
        In 1796, English country doctor Edward Jenner discovered a less dangerous method of vaccination. He successfully inoculated an eight-year-old boy with cowpox.
        
        Symptomatic treatment: use antibiotics, drugs to cool the temperature, with the use of painkillers.
    - - All aspects of the impact.
        
        The Black Death completely shook the shackles of religion, humanism began to revive, the Renaissance began to sprout.
        
        The Black Death had a positive effect on wages through a closed loop of business behavior.
        
        As the most immediate consequence of the Black Death, the increase in the death rate directly led to a sharp decrease in the social labor supply.
        
        Under the regulatory role of the market, a larger scale of urbanization became possible, providing material support for the subsequent development of the manufacturing industry.
        
        Smallpox dramatically changed the course of world history.
        
        In the 18th century, smallpox spread across Europe, killing more than 150 million people. And even more.
        
        It is the most serious disease in human history.
  - - - General treatment：patients should rest in bed and be given a liquid diet or intravenous infusion of glucose and normal saline to maintain water and electrolyte balance.
      - Drug therapy: symptomatic therapy, antibacterial therapy, other drug therapy.
      - For severe patients, routine treatment, maintenance of other important organ functions and other treatment.