Mad cow disease is the general term for bovine spongiform encephalopathy or BSE. The disease affects the nervous system of cattle, as well as their physical condition.
When cattle contract BSE, holes form in their brains. Their brains become spongy, hence the term “spongiform”. Their brains are slowly wearing out.
An animal with mad cow disease becomes aggressive and shows signs of mental illness. They find it difficult to move. This difficulty is getting worse and worse.
Mad cow disease – incubation period
The incubation period of a disease is the time from infection to the appearance of the first symptoms. If I come into contact with an infectious source and develop a fever four days later, the incubation period is four days.
Spongiform encephalopathy in bovines has an incubation period of 4 to 5 years. Cattle between four and five years old can become infected very easily.
variant Creutzfeldt-Jakob . disease
BSE was a rare disease until the second half of the 20th century. In 1996, the British government announced that BSE could infect humans. Experts say the spread to humans causes variant Creutzfeldt-Jakob disease, or vCJD.
In 2018, 231 cases of vCJD were reported worldwide.
What causes mad cow disease?
Researchers believe that a protein called a prion is the cause of mad cow disease. Normal prion proteins turn into abnormal prion proteins which are extremely harmful. No one knows for sure why prions transform.
The body of a sick cow is completely unaware of the presence of abnormal prions. Therefore, his immune system is not trying to get rid of it.
Signs of mad cow disease in cattle
The most common sign of BSE is a lack of coordination. Sick animals have difficulty walking. He also had trouble getting up.
A cow with BSE can become very anxious and even aggressive. That’s why we call it “mad cow disease”.
Once a cow begins to show symptoms, there’s nothing a veterinarian can do. The animal grew sicker and sicker until it died, usually within six months. Sometimes death can occur two weeks after the first signs appear.
There is no vaccine or treatment for BSE.
According to the US Food and Drug Administration (FDA):
“Currently, there is no reliable way to test for BSE in live cows. After a cow dies, scientists can tell if it has BSE by looking at its brain under a microscope and seeing its spongy appearance.
“Scientists can also tell if a cow has BSE by using test kits that can detect abnormal prions in the brain.”
The FDA is the United States regulatory agency responsible for medical devices, drugs, food, cosmetics, and tobacco products.
mad cow disease in england
BSE was first recognized and defined in the UK in 1986. In 1988, it became a notable disease. In the following years, there was a mad cow epidemic. In 1992, there were 37,000 cases of cattle with BSE.
The British government had to cull millions of animals. It has devastated ranchers across the country.
To date, there have been more than 183,000 cases of BSE nationwide.
According to the Scottish Government:
“Mad cow disease occurs in adult animals of both sexes, usually in children between the ages of four and five. It is a neurological disease associated with marked changes in mental status, postural, motor and sensory abnormalities.
“Clinical illness usually lasts several weeks and is often progressive and fatal.”
