Something else Observer can blame on the Greens.

>>There’s been a lot in the news lately about diseases such as MERS, ebola, anthrax and the bubonic plague. How often do diseases jump from animals to humans, and why do they often seem so deadly?

When animals pass on a disease to humans there seems to be an extra element of danger and mystery, perhaps reminders of the dreaded bubonic plague, which was carried by rats and swept through Europe in the Middle Ages killing 25 million people.

There are over 200 ‘zoonotic’ diseases — infections caused by viruses, bacteria, parasites, fungi or prions that are transferred directly or indirectly to humans from animals.<<

More:
http://www.abc.net.au/science/articles/2014/07/30/4056579.htm