I drank after someone who had past mrsa infection years ago don't believe they have any open sores presently or since they had in past should i be ok it was one drink by accident or do i need a work up? thanks in advance?

You do not need any work up and MRSA is more common than you know. It is probably carried by a number of your family and friends; and if you play sports, you have body contact with regularly. We all have bacteria in various parts of body: the skin, mouth, nostril gut. The problem is when they are in places they ought not to be like the blood or they overstep the body immunity to cause disease.

Very low chance of transmission. You are concerned about Community-associated MRSA infections presenting most often as skin and soft tissue abscesses. Frequent skin-to-skin contact, sharing of personal items, such as towels and clothing, and poor personal hygiene increase the risk of acquiring infection.