Humans have been fighting various infectious diseases for a long time a century ago. In an era when neither cause nor treatment was well established, infectious disease pandemics have had a changing impact on history. The number of deaths from infectious diseases has declined dramatically since the late nineteenth century, when the pathogens and ways of dealing with infectious diseases have been known. However, since around 1970, emerging infectious diseases, which have not been known before, and re-emerging infectious diseases, which have recurred despite a temporary decrease in the number of outbreaks of infectious diseases that have spread in the past, have become a problem. It is a threat not only in developing countries but also in developed countries. Infaction Ere Threet smallpox The only infectious disease that humanity has eradicated A century ago: Smallpox traces in Egypt mummies The Sixth Century: Smallpox Epidemics in Japan, and Periodic Epidemics Later 15th century: continental epidemic in the Americas due to the new continental surface of Colombus 1980: WHO Declaration of Global Eradication of Smallpox Decrease in population from 80 million to 10 million in 50 years Plague Around 540: Spread in Vizantium (Constantino Blue), a Central Europe City It is estimated that up to […]

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Infectious diseases are caused by the invasion of pathogenic microorganisms in the environment (including the air, water, soil, and animals) into the human body. Many invisible microorganisms (bacteria, viruses, fungi (molds, yeasts, etc.) are present around us. Among them, the microorganisms that cause infectious diseases are called pathogens. Also, parasitic diseases caused by parasites such as ascaris and pinworms are one of the infectious diseases. In addition, parasitic disease caused by parasites such as roundworm and helminth is one of the infectious diseases Infection is caused by the invasion, establishment, and multiplication of pathogens in the human body. Infection may cause symptoms (overt infection) or may not cause obvious symptoms (subclinical infection). Latently infected people are often problematic because they are unknowingly carriers (carriers) who shed the pathogen and are likely to spread the infection as a source of infection. It is important to know where (source) and how (path) invisible pathogens and parasites invade. [On the Source of Infection]. People (infected individuals), animals, and insects infected with pathogens, and foods and foods contaminated with pathogens are sources of infection. These include foods and foods touched by carriers and infection animals, such as bodily waste, vomitus, blood, and body fluids […]

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