From Boston, at a meeting of the Infectious Diseases Society of America
Last winter, a recently discovered bacterial variant became a major cause of severe pneumonia among people who caught the flu.
Methicillin-resistant Staphylococcus aureus, or MRSA, has long been a menace in hospitals, where it can spread from one patient to another. Resistant to a class of penicillin-like antibiotics, MRSA causes difficult-to-treat pneumonias and infections of the skin, blood, and surgical sites.
In the past few years, new strains of MRSA have emerged that are not associated with health care facilities. In many U.S. cities, community-associated MRSA is now the main cause of skin infections among teams playing contact