How can I protect myself from getting strep?

I'm going to my best friend's apartment tonight because she's taking me to the airport tomorrow after she gets off work.

Her roommate, Amanda, got strep over New Year's weekend and I was there but I didn't get sick and now my best friend, Christy, thinks she has strep too... Amanda is on meds so she's not contagious but that means Christy is and I REFUSE to get sick for my trip.

So what do I do? I need to stay there because I have no transportation.
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+1 y
I'm just getting dropped off there tomorrow and being taken to the airport pretty much straight away. So I think I'll be okay.
How can I protect myself from getting strep?
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