Microbes are highly creative, hardy little adapters when it comes to survival. Mutation, natural selection and genetic variation are all means which they cleverly employ to evolve and adapt to changing environmental conditions.
In recent years, microbiologists have identified a growing number of new, antibiotic-resistant "superbugs" that are causing worry and concern at hospitals and among health workers - not to mention the public at large. Just last month, for example, a group of Indian doctors reported on 12 cases of what they called 'totally drug resistant' or TDR- TB. The Indian Health Ministry responded competently and swiftly in full denial mode: "The doctors from Hinduja have unnecessarily raised a panic alarm. The term TDR is not recognized by the WHO or the Revised National Tuberculosis Control Programme (RNTCP). As of now, they are only slotted as Extensively Drug Resistant (XDR)-TB cases."