Help with an infection

At a pharmacy
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Man: I need something for my hand.
Pharmacist: Have you done anything to clean the wound?
Man: Well, I washed it off with water at a nearby gas station.
Pharmacist: Did you put anything on top of that?
Man: Oh, nothing, nothing.
Pharmacist: This is an ointment that should help you out.
It has antibiotic in it to help with an infection. What you do is
to squeeze the ointment out onto a Kleenex, and then apply it to your skin.

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1- What does "help with an infection" mean?

2- What does "help" mean in this sentence?

Does it mean "prevent an infection"?

Thank you