Same as natural disasters there are many infectious diseases which caused many humans to death and made the world suffer. Many of these in factious diseases made their marks on the history. Below are several diseases that massively changed history. They have killed millions and millions of people. It had also taken hundreds of years to find cures and also to create treatments.

  1. Cholera

Cholera is a diarrheal disease which is caused by a bacterium that spreads all the way through water or food systems that did not have proper sanitation. It can go from asymptomatic to fatal in just three hours. However, the roots of cholera were in Ganges Delta in India but had spread on all planets. It has affected South Asia in 1061; Africa in 1971 and America in 1991.there are about four million cases of cholera every year and in which more than ten lakh of people are dying. In 2010 UN resolved the explicitly recognize clean drinking water as a right of every human.

  1. EbolaCynthia Goldsmith
    This colorized transmission electron micrograph (TEM) revealed some of the ultrastructural morphology displayed by an Ebola virus virion. See PHIL 1832 for a black and white version of this image.
    Where is Ebola virus found in nature?The exact origin, locations, and natural habitat (known as the “natural reservoir”) of Ebola virus remain unknown. However, on the basis of available evidence and the nature of similar viruses, researchers believe that the virus is zoonotic (animal-borne) and is normally maintained in an animal host that is native to the African continent. A similar host is probably associated with Ebola-Reston which was isolated from infected cynomolgus monkeys that were imported to the United States and Italy from the Philippines. The virus is not known to be native to other continents, such as North America.

Ebola was discovered in Africa in 70s. It is a virus that leads to extreme bleeding in humans as well as other primates. Its symptoms can take many days to develop and which include vomiting, muscular pain, diarrhea, internal and external bleeding and so on. Ebola virus comes up with high mortality rate and alkyls many people who get infected by it. In 2014 the deadliest Ebola outbreak was spread in West Africa which killed people five times more than its previous outbreaks.

  1. Malaria

Malaria is known to be one of the most infectious diseases in history which is caused over 300 cases in the world and about three million deaths in a year. It is mainly carried by the female mosquitoes as they transfer parasites in their saliva into victim’s bloodstream. These transmitted parasites then travel to the liver where they mature and also reproduce. Malaria also had it marks in history as it was a common claim to fame that Malaria had a role in killing Alexander the Great. Malaria made scientists with a significant understanding of transmission vectors which includes how disease-carrying animals can infect humans too and what can be done to stop that.

  1. Tuberculosis

TB, i.e. tuberculosis is a deadly respiratory infection which can be in two forms latent TB as well as active TB. Latent TB is not contagious, but people with the weakened immune system cannot hole active TB. Tuberculosis leads to the promotion of pasteurization as well as the quest for antibiotics. Only pasteurization was the primary key to control tuberculosis. In the history TB also left its mark as in 19th century TB was spread all the way through milk and which led to the development of pasteurization and which had its roots in eliminating TB.

READ: Simple Home Remedies to Keep You Away From Cough & Cold

  1. HIV /AIDS

HIV attacks the immune system of the body especially the CD4 cells, i.e. T cells. These T cells assist the immune system in fighting infections and are left untreated it leads to a reduction in CD4 cells. As a result, this makes the victim more prone to infections or cancers which are termed as AIDS. AIDS is known to be the final stage of HIV infection and occurs at the time when the number of CD4 cells falls down drastically up to 200 cells .globally about 36 million people are infected, and about 2 million children are living with it as they transferred it all through their mothers at the time of pregnancy.

  1. Syphilis

Syphilis is a sexually transmitted disease and has four stages. At first, it appears as a small spot of infection, after that the second stage appears as the widespread rash or else swollen lymph nodes. After those bacteria enter a latent before converting itself too tertiary syphilis. After it leads to neuromuscular degeneration, dementia as well as blindness. As per the studies, syphilis had been imported from New World colonization. It also has the history of inspiring worthless remedies. At present, it is widespread and can be cured by penicillin.

  1. Polio

Polio at present is very rare and thanks to Jonas Salk for this as he developed a polio vaccine. Before this vaccine was not created polio was very easily transferable diseases all the way through an infected person’s stool or else via droplets when at the time of sneeze. This disease could also paralyze its victims, and that paralyzes cannot be reversed at any cost. People have to lead the entire life by living in iron lungs. Franklin D.Roosevelt was a famous man who had polio paralysis.

  1. Spanish influenza

Spanish influenza is known to be one of the deadliest 20th-century pathogens that infected about 500 million people in the world. Firstly occurred in Europe and US but spread all over the world. It was named as Spanish influenza as Spain hit particularly very hard with it. It also affected World War I battlefields as many young men were infected at that time. More people had been killed by this virus in comparison to the deaths in frontlines. It affected many of its effects were also noted all across the military as well as the economy.

  1. Smallpox

Smallpox began in northern Africa and killed many people including royals and poor. It was an extremely infectious disease that had wiped out entire empires at that time. It is a disease which is caused by variola virus and spreads all the way through the skin to skin contact with bodily fluids. It can also be spread through the air. It could not be controlled until and unless the development of the World’s first vaccine of Smallpox in the 1700s. Now smallpox owing to vaccination efforts have been fully eradicated from human population as it is now can only be found in exceptionally guarded laboratory settings.

  1. Bubonic plague

 In 14th century Bubonic plague or else Black Death was spread all across s Europe, and Yersinia pestis was responsible for this epidemic. It was known to be one of the most devastating pandemics in history which leads to deaths of many people. This Black Death arrived Europe by sea, as people gathered at docks met with a horrifying surprise. After its attack people were covered with black boils all over the body that comes up with blood and pus. As per the historians, this bubonic plague affected the economic system, drastically and contributed it to fall and also caused irreparable damage to the church. RajitHealthCholera,Ebola,HIV /AIDS,Infectious Diseases,Malaria,Tuberculosis
Same as natural disasters there are many infectious diseases which caused many humans to death and made the world suffer. Many of these in factious diseases made their marks on the history. Below are several diseases that massively changed history. They have killed millions and millions of people. It...