Since the intital parliamentary discussions re the introduction of pasteurised milk in the UK, we have had a mass vaccination programme against TB. Do we still need this 'belt and braces' approach? Having been brought up on a dairy farm I didn't have pasteurised milk until I was in my mid 20's. My immune system got worse then, but that could of course be due to other factors.
@zand, you are able to buy it from one of a couple of hundred farmers but they have to sell direct to the public. With no 'middle man' , I assume It increases traceability in the case of an outbreak
Mass vaccination doesn't occur anymore. They don't vaccinate at 12 and just a few areas vaccinate just after birth.
(one of my five grandchildren was vaccinated because she was born in West Middx)
Can we take the risk when we have so many cows that come in contact with wild life infected with TB?
In the past there is no doubt that milk was the original source of many TB outbreaks. No doubt, once the disease was contracted by a few it was then spread by the respiratory route This was exacerbated by overcrowded cities and poor living conditions. We have fewer slums now. I still suspect that , as elsewhere in the world, it would be the poorest sectors of society mainly affected if the laws on pasteurisation were to be rescinded.
Vaccination is not 100% effective. The figures I can find for the vaccine from
here say that is 70-80% effective against the more serious forms including meningitis in children but less so against respiratory disease. The
wiki article says that it decreases the chance of a child getting the infection by only 20%. They know the vaccine works for 10-15 years but don't know how much longer it lasts after that (effectiveness probably wanes)
Even after vaccination was introduced in 1953, there was always a lowish background rate in spite of the fact pasteurisation was the norm. I actually had an Uncle die either with or of TB in the early 1960s. We also had a case when I was at school in 1969. (meaning that 500 pupils plus all staff had to undergo testing which would have had a financial cost and certainly incurred an anxious waiting period)
Of course TB is not the only possible contaminant of raw milk . Bovine TB is less common in the US. There many states ban non pasteurised milk on the grounds that it can contain various other nasty bugs.
http://www.slate.com/articles/life/food/2010/07/the_rawmilk_deal.html