[Global strategies in prevention of infectious diseases on the turn of the second and third millennium: expectation versus reality].

Prevention has been the greatest success in the field of infectious diseases. Control of infectious diseases is being challenged by many factors, like standards of living, human behaviour, mass population movements, emergence of infectious like HIV/AIDS and SARS, the re-emergence of infections such as tuberculosis, development of resistance in bacteria, viruses and parasites, modern rate of global travel, etc. Although great advances have been made, a considerable burden of morbidity and mortality from infectious diseases remains globally. The aim of any control program can be defined by three levels--containment, elimination and eradication. Prevention methods are many aspects, including introduction of prevention guidelines, low cost interventions, vector control, surveillance, and vaccination, etc.