MRSA (IMAGE) University of Missouri-Columbia Caption Methicillin-resistant Staphylococcus aureus (MRSA), a “superbug” that is resistant to most medications, sickened more than 94,000 people in 2005 and killed more than 19,000 in the US, according to a report from the Centers for Disease Control. Credit George Stewart/University of Missouri Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.