Ernesto Abel-Santos displays the plush versions of Clostridum difficile and anthrax. They're cute in this form, but in reality, C. diff causes flu-like symptoms and violent diarrhea (and sometimes death), while anthrax attacks the respiratory system and is highly lethal. But he explained that spores are all around. Many of us have probably breathed anthrax spores, but the density is what makes the difference. And C. diff is commonly found in the human digestive system. It's only when your beneficial microbes are killed off by antibiotics that they're free to germinate and wreak havoc. Abel-Santos has created patent-pending compounds that are very effective at inhibiting C. diff, and while he has some promising leads for anthrax, the search continues.