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Where did Typhoid come from, it came from the cess-pits/sewage that was left open to the victorians. they became infected from the sewage and it was also carried by flies, water or food.

Improved answer:


Typhoid fever has been around long before the Victorian era. It is most probably what killed a third of the population of Athens, Greece, in 403 B.C. Of course it was not named until the 19th century.


Originally, the organism that causes typhoid fever was only in chickens. When humans domesticated chickens, the organism mutated and spread to humans. Then, it was able to transmit human to human through ingestion of food, water, or anything else contaminated with the feces of an infected person. That is still how it is transmitted.


Many of the Infectious Diseases common in humans originated in domesticated farm animals. Most of these disease organisms were harmless in their original hosts, but became dangerous or deadly when they spread to humans. For example, tuberculosis came from goats. Measles and smallpox came from cows, whooping cough from pigs, leprosy from water buffalo, and the common cold, probably from horses.


Influenza originally came from ducks. It first spread into domesticated chickens, then to domesticated pigs and humans. That's why some flu viruses are called "bird flu" (chickens) or "Swine Flu" (pigs). It depends on how much of the virus came from what animal. Now, influenza viruses from chickens, pigs, and humans can all mix together and form new flu viruses that are more dangerous than the regular human flu. Our current H1N1 "swine flu" is one of these re-assorted viruses: the first ever that is part bird, part pig, and part human flu virus.


"Most and probably all of the distinctive infectious diseases of civilization have been transferred to human populations from animal herds."-William H. McNeill, Plagues and Peoples In: Fox N. 1997. Spoiled: The Dangerous Truth about a Food Chain Gone Haywire (New York, NY: Basic Books).


Here's a great book on the topic, free, full text, online:

http://birdflubook.com/g.php?id=5


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15y ago

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