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</script>To the Editor: Hepatitis A virus (HAV) infection rates are very low in industrialized countries. A noticeable fall in the prevalence of HAV antibodies (anti-HAV) has been reported in southern European and Mediterranean countries such as Spain (1) and Greece (2), reflecting improvements in hygiene standards in the last decades.
Adult, Male, Hepatitis A ; HAV, Adolescent, Epidemiology, R, Seroprevalence, Infectious and parasitic diseases, RC109-216, Hepatitis A, Hepatitis A Antibodies, HAV, Military Personnel, Italy, Prevalence, Medicine, Humans, Letters to the Editor
Adult, Male, Hepatitis A ; HAV, Adolescent, Epidemiology, R, Seroprevalence, Infectious and parasitic diseases, RC109-216, Hepatitis A, Hepatitis A Antibodies, HAV, Military Personnel, Italy, Prevalence, Medicine, Humans, Letters to the Editor
| citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).  | 19 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.  | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).  | Top 10% | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.  | Top 10% | 
