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The author, headed by Alan Colchester, professor of neurology at Kent University in England, pointed out that the source of mad cow disease may be the human skeleton infected with classical Creutzfeldt-Jakob disease. They pointed out that the British beef imports from South Asia may contain such bones, and cattle may suffer from mad cow disease after eating this feed.
It was alleged that in the 1960s and 1970s, Britain imported hundreds of thousands of tons of bone, bone fragments and animal carcasses for use as fertilizers and animal feed. Nearly half of them came from Bangladesh, India and Pakistan. In India and Pakistan, local farmers often sell their bones and animal carcasses from the ground and rivers to make money. As Hindus believe that human corpses should be thrown into the river, it is better to throw them into the Ganges, so farmers can often pick up large numbers of human corpses.
British scientists finally pointed out that because of the similarity between mad cow disease, classical human Creutzfeldt-Jakob disease and new human Creutzfeldt-Jakob disease, it is sufficient to conclude that there is a link between them. They said that although this theory has not yet been confirmed, it is worth further study. For this new theory, two Indian experts said that it is worth studying, but there are flaws.
Humans still do not know the exact cause of mad cow disease, only know that it belongs to transmissible spongiform encephalopathy (TSE). The most popular explanation for the cause of mad cow disease is that after eating the feed containing mutton, the cattle passed the sheep's proprietary scrapie disease to the cattle and eventually developed a bovine-specific disease. Another theory is that cattle themselves have developed this disease, not from other species.
TSE is found in many species. For example, scrapie is a common TSE in sheep and goats, and chronic atrophy is a common TSE in deer. All TSEs are fatal, incurable, and cannot be diagnosed until the patient dies. After Britain discovered the first case of mad cow disease in 1986, humans knew that cattle could also suffer from this disease. About 10 years later, the new human Creutzfeldt-Jakob disease began to appear in the United Kingdom. Experts believe that the disease was caused by eating beef infected with mad cow disease. But where is the origin of mad cow disease? It is still a mystery.
British scientists propose the latest theory that mad cow disease originates from humans
The Associated Press quoted an article in the British medical journal The Lancet on September 1 stating that several British scientists recently proposed theories that mad cow disease may have originated from humans.
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