Klaus Nielsen and Wei Ling Yu, former researchers at the Canadian Food Inspection Agency (CFIA), are accused of attempting to export harmful pathogens that could infect humans and livestock to China.
Nielsen was apprehended as he was heading to the Ottawa airport last October with 17 vials of live brucella bacteria, which can cause infections of bovine reproductive organs, joints and mammary glands, as well as infertility.
It mostly affects cattle, deer and horses, but can also be passed on to humans and cause flu-like symptoms. There is no vaccine and the only way to control its spread is to cull animals suspected of being infected.
source - http://www.timeslive.co.za/scitech/2013/04/04/scientists-charged-with-smuggling-contagious-germs