A patient is brought to the emergency department:
A man, 19 years old, on his way to A&E, accompanied by a roomate, became very restless even agitated, loosing consciousness. Called EMS. At the arrival of EMS the patient was unconscious (GCS 1-1-4). He was intubated, ventilated and intravenous catether was inserted. The history was taken from the roomate. Two days ago there was a party and all were binge drinking. Next morning, the patient complained about headache, weakness, joint and back pain and fever. His condition got gradualy worse. Four hours later petechial rash appeared on a lower and upper limbs. According to this medical history there is reasonable suspicion of invasive meningoccocal disease. Which antibiotic and in what dose are indicated in a suspition of IMD?