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By Amy Maxmen of Nature magazine Researchers have identified a gene that makes some strains of an antibiotic-resistant bacterium more virulent, and have found that the gene is becoming more prevalent. Epidemics of infection with methicillin-resistant Staphylococcus aureus (MRSA) come in waves. [More]

The superbug MRSA (methicillin-resistant Staphylococcus aureus ) has provoked fear in doctors and patients alike because it is endowed with genetic characteristics that make it impervious to many antibiotics, and it can be deadly to boot.

A new form of drug-resistant Staphylococcus aureus (MRSA) has been found in dairy cows and humans in the U.K.

Study finds Staphylococcus aureus in 47% of beef, pork and poultry samples in U.S. supermarkets

Methicillin-resistant Staphylococcus aureus (MRSA) is a nasty skin infection often picked up at hospitals that can lead to pneumonia and blood stream infections if left untreated.

There are so many news stories about antibiotic resistance these days that you may be tempted to ignore them all just to preserve your sanity. But there is a kind of hierarchy of danger when it comes to figuring out which stories are most deserving of your attention