infectious

But his enthusiasm is infectious, and it is clear how much inspiration he draws from his fellow coaches.

"People are so stressed these days, so these events are a good thing. Because happiness is infectious."

"Other runners were stopping and dancing with him. It was quite infectious."

In the last year, some of music's biggest and most recognizable faces have released chart-topping, infectious pop music.

But he is rapidly inching closer toward influencing the federal response to infectious disease, vaccines and public health — which many scientists say would be detrimental to the nation.