You are reviewing Mrs Clarke as she has been bitten on her arm by her husband during a heated argument this morning. She has informed the police and plans to move in with her sister until she finds alternative accommodation. Mrs Clarke denies any other injuries or episodes of domestic violence. Examination reveals an occlusal injury on her left distal forearm with four distinct puncture marks. It is obvious that the skin has been broken and she shows you an earlier picture on her phone where it was bleeding. There is no sign of active infection. You document all your findings and get consent to take pictures for Mrs Clarke’s notes. She has no known drug allergies.
Which is the most appropriate antibiotic choice to prevent secondary bacterial infection?