A story that's gone viral (again) claims that McDonald's touchscreen menus are fecally tainted. Is it true? No. The global headlines saying otherwise are total lies. So, on what basis are these folks making that ridiculous claim?
Regardless of our brain's natural security, some pathogens still get in. One is called Cryptococcus neoformans, a fungus that can be found in the excrement of flying tree rats, like pigeons and bats. After being inhaled into the lungs, the fungus makes its way into the brain using a clever mechanism.