[Hepatitis B and C in 1997].
In 1997, 4,896 cases of hepatitis B were notified in Poland, including 66 mixed infections with B and C virus. The number of cases notified was 1,539 less than in 1996. The incidence rate was 12.7/100,000, which was lower by 4.0 than in the proceeding year (16.7), what means a decline in the incidence rate of hepatitis B by 24%. 1997 was the fifth consecutive year when a decline in incidence rate hepatitis B was observed, since the intensive program of hepatitis B prevention was introduced in 1993 Hepatitis B incidence rate was greater in urban areas (14.1/100,000) than in villages (10.4/100,000). In urban area, the incidence rate was proportional to the number of habitants (fig. 1). The immunisation programme is the main reason of falling incidence among children aged 0-3. In 1997, 36 cases were notified in children aged 0-3 while in 1990 129 cases were registered. The incidence rate has fallen from 9.5/100,000 to 2.5/100,000 in this age group, which means a drop of 74%. The analysis of notified cases shows that the program of hepatitis B prevention is effective. Positive trends from previous years were maintained in 1997 although the declining trend has been slightly sloved. In 1997 hepatitis C has become a statuatory notificable disease in Poland. 1,064 cases were notified, with an overall incidence of 2.75/100,000.
Zakład Epidemiologii Państwowego, Zakładu Higieny, Warszawa.
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D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006509:Hepatitis B / Q000453:epidemiology*; D006526:Hepatitis C / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D007223:Infant; D008297:Male; D008875:Middle Aged; D011044:Poland / Q000453:epidemiology; D012424:Rural Population / Q000706:statistics & numerical data; D013997:Time Factors; D014505:Urban Population / Q000706:statistics & numerical data
Wirusowe zapalenie watroby typu B oraz typu C w roku 1997.