Several studies of Helicobacter pylori infection have examined identification of new infections and loss of existing infections over time. These studies bring additional information to the many studies on prevalence that have been performed across the world. Direct evidence of the major routes of transmission is still lacking, however. Apart from studies of transmission, the influence of H. pylori infection on upper gastrointestinal diseases is undergoing reappraisal. This article updates previous reviews and focuses on information made available in the last few years, mostly in the second half of the 1990s, regarding the epidemiology of H. pylori.<sup>6 Bardhan P.K. Epidemiological features of Helicobacter pylori infection in developing countries Clin Infect Dis 1997 ;  25 : 973-978

Cliccare qui per andare alla sezione Riferimenti, 26 Feldman R.A., Eccersley A.J., Hardie J.M. Epidemiology of Helicobacter pylori: Acquisition, transmission, population prevalence and disease-to-infection ratio Br Med Bull 1998 ;  54 : 39-53

Cliccare qui per andare alla sezione Riferimenti, 46 Harris A., Misiewicz J.J. Incidental eradication of Helicobacter pylori. Lancet 1997 ;  349 : 59  [cross-ref]

Cliccare qui per andare alla sezione Riferimenti, 85 Megraud F. Epidemiology of Helicobacter pylori infection Gastroenterol Clin North Am 1993 ;  22 : 73-88

Cliccare qui per andare alla sezione Riferimenti, 89 Mitchell H.M. The epidemiology of Helicobacter pylori. Curr Top Microbiol Immunol 1999 ;  241 : 11-30

Cliccare qui per andare alla sezione Riferimenti, 98 Parsonnet J. Helicobacter pylori Infect Dis Clin North Am 1998 ;  12 : 185-197  [cross-ref]

Cliccare qui per andare alla sezione Riferimenti, 125 Taylor D.N., Blaser M.J. The epidemiology of Helicobacter pylori infection Epidemiol Rev 1991 ;  13 : 42-59

Cliccare qui per andare alla sezione Riferimenti, 142 Xia H.H., Talley N.J. Natural acquisition and spontaneous elimination of Helicobacter pylori infection: Clinical implications Am J Gastroenterol 1997 ;  92 : 1780-1787

Cliccare qui per andare alla sezione Riferimenti</sup>