Mad Cows need love too
Summary: It's not in meat (muscle tissue). It's not in milk. About 20 people get it each year. It's more likely you'd be struck by lightning (and killed). Now ask yourself, why is it being hyped so much, and why is so much money being spent to prevent it?
Here's what I found from reputable sources in about an hour of searching.
What is mad cow disease (BSE)?
"Bovine Spongiform Encephalopathy (BSE) is a transmissible, neurodegenerative, fatal brain disease of cattle. The disease has a long incubation period of four to five years, but ultimately is fatal for cattle within weeks to months of its onset. BSE first came to the attention of the scientific community in November 1986 with the appearance in cattle of a newly-recognized form of neurological disease in the United Kingdom (UK)." [Source]
Current bovine infection case data is available here. In the US, from 1989 to June 27, 2005 there has only been 1 (one) case. The UK has historically had much more trouble with BSE in cattle. The UK count in cattle peaked in 1992 with 37,280 cases. In the last complete calendar year, 2004, there were only 343 confirmed cases in the UK. Clearly the epidemic is well in hand. [Source]
What are TSEs? What's CJD? What's vCJD?
"Transmissible Spongiform Encephalopathies (TSEs) are diseases characterized by spongy degeneration of the brain with severe and fatal neurological signs and symptoms. BSE is one of several different forms of transmissible brain disease affecting a number of animal species." [Source]
"While several human TSEs exist, Creutzfeldt-Jakob disease (CJD) is the prototype human TSE. CJD occurs in a form associated with a hereditary predisposition (approximately 5–10% of all cases) and in a more common, sporadic form that accounts for 85–90% of cases." [Source]
"A newly recognized form of CJD, variant Creutzfeldt-Jakob disease (vCJD), was first reported in March 1996 in the UK (cf. WHO Fact Sheet N° 180 on variant Creutzfeldt-Jakob disease). In contrast to the classical forms of CJD, vCJD has affected younger patients (average age 29 years, as opposed to 65 years), has a relatively longer duration of illness (median of 14 months as opposed to 4.5 months) and is strongly linked to exposure, probably through food, to BSE. Recent studies have confirmed that vCJD is distinct from sporadic and acquired CJD. " [Source]
"Variant Creutzfeldt-Jakob disease (vCJD) is a rare and fatal human neurodegenerative condition. As with Creutzfeldt-Jakob disease, vCJD is classified as a Transmissible Spongiform Encephalopathy (TSE) because of characteristic spongy degeneration of the brain and its ability to be transmitted. vCJD is a new disease that was first described in March 1996." [Source]
So what's being done?
"All countries must prohibit the use of ruminant tissues in ruminant feed and must exclude tissues that are likely to contain the BSE agent from any animal or human food chain. BSE eradication was recommended during a WHO consultation held in December 1999." [Source]
"In June 2000, the European Union Commission on Food Safety and Animal Welfare strengthened the European Union's BSE control measures by requiring all member states to remove specified risk materials from animal feed and human food chains as of October 1, 2000; such bans had already been instituted in most member states." [Source]
What is the risk of getting it? What's the case history?
"There have been 153 cases of vCJD reported in the world since the first case was identified in 1995, with 143 of these in the UK. Although many millions of people in the UK and around the world have been exposed to UK beef, and approximately 200,000 cases of BSE in cattle were reported and removed from the food supply over the past twenty years, the number of cases of vCJD remains low." [Source]
"From October 1996 to November 2002, 129 cases of vCJD have been reported in the UK, six in France and one each in Canada, Ireland, Italy and the United States of America. Insufficient information is available at present to make any precise prediction about the future number of vCJD cases." [Source]
Yes, that's right. The number of reported cases is just over 150, about 20 per year. How does that compare to other diseases?
Leading causes of global deaths: [Source]
- In 1997, of a global total of 52.2 million deaths, 17.3 million were due to infectious and parasitic diseases; 15.3 million were due to circulatory diseases; 6.2 million were due to cancer; 2.9 million were due to respiratory diseases, mainly chronic obstructive pulmonary disease; and 3.6 million were due to perinatal conditions.
- Leading causes of death from infectious diseases were acute lower respiratory infections (3.7 million), tuberculosis (2.9 million), diarrhea (2.5 million), HIV/AIDS (2.3 million) and malaria (1.5-2.7 million).
- Most deaths from circulatory diseases were coronary heart disease (7.2 million), cerebrovascular disease (4.6 million), other heart diseases (3 million).
- Leading causes of death from cancers were those of the lung (1.1 million), stomach (765 000), colon and rectum (525 000) liver, (505 000), and breast (385 000).
"In the UK, the current risk of acquiring vCJD from eating beef and beef products appears to be extremely small, perhaps about 1 case per 10 billion servings." [Source]
"Experiments done with cattle and other animals suggest that almost all of the infectivity is in tissue from the cattle’s brain, spinal cord, and intestine, and that muscle meat itself is not infectious. Milk products from cattle are also not associated with any risk of infection with BSE." [Source]
How about other ways of dying in the US? (2000 data) [Source]
- fall from/on stairs/steps, 1307;
- struck by thrown/projected/falling object, 712;
- fall involving a bed, 450; [All the more reason to sleep on the floor.]
- other accidental hanging/strangulation, 333;
- accidental strangulation/suffocation in bed, 327; [Be safe; don't sleep with plastic bags or rope!]
- varicose veins of the lower extremities, 177; [Yes, you're more likely to die from varicose veins.]
- fall involving a chair, 162;
- fall involving ice skates, skis, roller-skates, skateboard, 97;
- lightning, 50;
- varicose veins, other sites, 39;
- [At about 20 cases per year (world-wide, while the rest of this data is only for the US), this is roughly where vCJD would fall, perhaps even too high. Everything above here is more likely.]
- bicycle collision with stationary/fixed object 15;
- snake bites, 12;
- fall while being carried or supported by another person, 10;
- fireworks, 5;
- fall involving playground equipment, 4 (1999);
How much money is spent worldwide to prevent those deaths? The focus put on BSE is unreasonable.