Animal research: the cruellest side of scientific progress

Vivisection is a common scientific practice that consists of doing testing on living animals so that it could be possible for researchers to get a better understanding of how human diseases works and consequently to find a cure for them.
According to official statistics, more than 50 millions of sentient beings (cats, dogs, birds, pigs, and monkeys) are used annually for laboratory investigation just in the United States.
But is all this really essential for the development of new medical treatments as scientists have claimed for years?
To animal right supporters, it is not since they deny this kind of investigations could provide reliable results due to the enormous differences between animals and humans organisms and they way they react to the same drugs. A backup for this argument could be the cases of
Clioquinol and Thalidomide; two medicines that seemed to have had positive effects on thousands of animals, but in humans they did not worked well. Indeed, Both failures caused lots of deaths in Germany and Japan respectively.
To sum up, I think it is high time that authorities stopped investing our resources in such macabre activities, and we got informed about the cost of progress since, in a way, we are responsible for the abuse if we do not show our disapproval against this.
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