A sneakier virus

There's a lot of Covid-19 in the news right now.  It's impossible to ignore how much it's affecting everyone's daily life.  However this is not the first time a lab-based virus has been inadvertently unleashed on an unsuspecting public.

Here's something I bet you didn't know:  Not long ago, a contaminated vaccine was given to millions of people all around the world.  This vaccine contained an unknown virus, and this virus and the diseases it cause were covered up for decades within the medical and scientific communities.