a person wearing a blue dress with a tie is speaking about animals
a man in a blue shirt and tie talking with an image of a syringe and cow in the background
a guy is talking about a guy that administered a vaccine
the man in the blue dress shirt talks while the cow is to the left
the man wearing the blue shirt and neck tie talk with the graphics on the left of him
a man in a blue shirt and tie who looks tweaked out talks about needles and cows
a man wears blue dress talking something about the cow
a man wearing a tie talking about life saving advancements
a man in a shirt and tie talks about life saving advances
a man starts to explain some highlights of life saving advancements of small pox in medical history
a man in a blue button down and a tie lookes scared
the person is explaining about the how the cows should be treated
a guy in a blue button up shirt and tie is talking
a  man in a blue shirt and a black and blue tie standing next to a blue question mark  sirenge and above a cow
a man wearing a stripped tie is talking next to a question mark then a cow and syringe
a person in brown   color dress wearing cloth speaking standing on topic discusing and bafallo still image injection displaying on screen
a man in a blue shirt and tie  explains how the smallpox vaccine was invented
man begins to describe techniques used to make life saving vacinations
a guy with a shirt and tie is next to a cow and syringe
a man with a tie is near a picture of a cow