“I know that MRSA has no effect on my body..”
How do you know this? Have you been deliberately infected with MRSA at some point?
And even if that’s true, which I doubt, how does that extrapolate to the entire population?
L
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Use your head!
A large portion of our population obviously has come in contact with MRSA from interaction with infected people.
How long doed it take for inphetaigo to spread in a school classroom? Bacterial infections move quickly, and mostly unseen because part of their pathway consists of immune carriers.
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Most people are carriers and have no idea. It sits there growing in your nose until one day, bam you get an open wound and somehow it gets in there, then it actually causes the infection (or not because it doesn’t).
It’s a crapshoot really.