How did animals get tuberculosis, where did it start or what is it actually? It sounds such a man related disease and yet animals suffer from it worse than we do. Can someone please tell us more about it? Which animals are infected and how is it passed on?
I also have a mixed view Natascha - a lot of the 'interference' benefits us. The people who introduced European domestic animals have also provided benefits to the population by doing so, but I think that the cost to the environment was a high price to pay.
I have a very mixed view of Human and nature and the interference as you stated that humans do for a "positive" cause! Exactly who benefits most of the time from action taken.
My understanding is that TB in animals (lions, buffalo and, to a lesser extent, leopards, Honey Badgers and other predators) was introduced to Africa when Europeans settled there and brought in domestic cattle.
Bovine TB is different to human TB - we cannot catch TB from animals (yet!) and vice-versa in the same way that we cannot catch 'flu from cats which have feline influenza.
However, these diseases are constantly mutating - possibly due to our 'medical interferance' (so-called cures) including but not exclusively, antibiotics, which the bugs are constantly becoming immune to because we, and farmers, mis-use them!
This has manifested itself, for example, in the new 'Bird Flu' disease which can now be transmitted to humans and that animals can now suffer from 'human' diseases, which was not the case a few centuries (or even decades?) ago
BSE was contracetd by humans due to a chain of events.....
Sheep which had the 'scrapie' disease were judged, rightly, to be unfit for human consumption - so, what did we do with the carcasses of these infected sheep?
They were 'processed' and then added to cattle fodder - and other other herbivorous animals - which were then butchered for the human meat market.....
These cattle and other animals were, also, injected with antibiotics (and were fed other substances) which reduced the fat content and increased the meat yeild - to profit the farmers and the supermarket chains
The human race is, ultimately, responsible for almost every problem that besets nature, including those that affect our fellow humans.
Time and Evolution is only responsible for natural causes in the changes that occur - but the interference of humans disrupts Nature unacceptably.... ?
I think animals had tuberculosis first and passed it on to man when they all livec together in the same dwellings