So can I get a show of hands
how many of you in this room
have been on a plane
in this past year?
That's pretty good.
Well, it turns out that
you share that experience
with more than 3 billion people
every year.
And when we put so many
people in these metal tubes
that fly all over the world,
sometimes, things like this
can happen
and you get a disease epidemic.
I first actually got into this topic
when I heard about
the Ebola outbreak last year.
And it turns out that although Ebola
spreads through
these more