Superbugs, known as antibiotic – resistant bacteria that drive hospital acquired infections are spreading to the community. The most common kind in the US is a gram-negative bacteria MRSA. Gram – negative bacteria are hard to treat because they have an armor like shell around them. Reports from India in recent years have uncovered new kinds of gram negative bacteria that contain an enzyme called NDM-1. The enzyme confers resistance to antibiotics. The gene for this enzyme can easily be transferred directly to nearby bacteria. Treating patients having such bacterial infections is a nightmare.