Multi-drug resistant tuberculosis is an airborne bacterium that spreads in the same way as normal tuberculosis. Specialists blame its multi-drug resistance on poor medical practice and infected people not completing their full course of antibiotics thereby enabling the drug-resistant strains to develop through mutation. Further, doctors and clinics frequently prescribe the wrong drugs which produce the same effect. Treating multi-drug resistant tuberculosis is 10 times more expensive than normal treatment for tuberculosis thereby making the illness more likely to prove fatal in developing countries. At present, drug-resistant tuberculosis is present in India, Russia, Latvia, Estonia, the Dominican Republic, Argentina and Ivory Coast, but doctors fear the resistant strain could easily spread throughout the world.