Can mrsa also affect people who are taking care of a sick person?

Yes: If you do not use universal precautions, the care taker is also prone for infections. Mrsa known to colonize in the nasal cavity.

If mrsa patient: Having direct contact with another person’s infection,sharing personal items, such as towels or razors, that have touched infected skin,touching surfaces or items, such as used bandages, contaminated with MRSA