A six-year mixed breed cow in Florida has tested positive for atypical H-type bovine encephalopathy ( BSE ), According to the US Department of Agriculture (USDA) today. This is the 6th BSE evidence of the country.
The animal never entered battlefields and at no time posed any risk to food supplies or human health in the United States (19659005). The animal was first tested at Colorado State University ( CSU ) Veterinary Diagnostic Laboratory (a laboratory for laboratories of the National Animal Health Laboratory) as part of the routine monitoring of cattle that was unsuitable for slaughter
USDA Animal Health Inspection Service (APHIS) National Veterinary Services Laboratories ( NVSL ) confirmed the case
BSE is not contagious and exists in two species – classical and atypical. Classic BSE is a form that occurred in the late 1980s, especially in the United Kingdom, and with the variant Creutzfeldt-Jakob disease ( vCJD ) in humans. The primary source of infection for classical BSE is food that is contaminated with the infectious prion such as meat and bone meal, which contains protein from infected cattle. Regulations of the Food and Drug Administration (FDA) have prohibited the inclusion of mammalian protein in feed for cattle and other ruminants since 1997 and since 2009 have also banned high-risk tissue materials in all animal feeds.
Atypical BSE is different, and it usually occurs in older cattle, typically 8 years old or older. It seems to occur rarely and spontaneously in all cattle populations.
Of the five previous cases in the US, the first in 2003 was a case of classic BSE in a cow imported from Canada; the remainder has been atypical (H or L type) BSE.
BSE is a progressive neurological disease of cattle caused by prions, which are infectious agents consisting of protein material. The prion proteins affect the brain structure of infected animals, causing the animal to lose motor skills and eventually to death. Clinical symptoms include behavioral changes, coordination problems, weight loss, and decreased milk production. Once clinical signs appear, the condition of the animal worsens until it either dies or is euthanized.
There is no treatment or vaccine for BSE.