[Antibiotic-resistant bacterial strains, their spread and social and economic implications].

The policies, laws, regulations governing the prescription and the use of antibiotics in 41 countries are examined. The enforcement of restrictions and the relations with the emergence of resistant strains are discussed. Emergence and spread of antibiotic-resistant bacteria result augmented in developing countries. Efforts to improves, in these nations, sanitation, nutrition, right information, education and usage of antibiotics must be taken into consideration.