today, this belief is fostered by the members of the horatio alger association of distinguished americans american dream and ensure it for future generations through generous scholarship and mentorship programs. to meet this network of american dreamers, visit horatioalger.org >> well, a rare out break of the playing affecting four people in colorado and it all started with a two-year-old pit bull. with more on this is emergency physician dr. brett. can doctor, thanks for coming in. this really has never happened before where a person got sick after coming into contact with a dog, and not only sick, but new nonic playing. >> yeah. we see playing here less than 10 a year in the united states, and dogs are resistent to it, so they don't normally transmit it to the person, this is the first documented where the dog actually became ill and transmitted it to the owner . >> can you point your finger as to how that happened. >> that's the scary part of the equation here quarterback w be we don't know why this dog was susceptible, we just don't know . >> but people never get stuff from dogs. mayb