Objective To investigate the epidemiological characteristics of hepatitis A and provide scientific evidence for the prevention and treatment of hepatitis A in Lanzhou.
Method The data of hepatitis A from 2006 to 2016 in Lanzhou was extracted from the National Infectious Diseases Surveillance System and analyzed by SPSS 18.0.
Results A total of 2 242 hepatitis A cases in 2006-2016 were reported in Lanzhou, including 1 299 males (58%) and 943 females (42%). The number of hepatitis A cases was in a decreasing trend from 2006 to 2016. The proportion of hepatitis A cases was in a decreasing trend year by year in the younger age group and in an increasing trend in the elder age group. Hepatitis A cases could be found in all age groups and in all kinds of occupation groups. The proportion of cases was the highest in farmers accounting for 29.08%, and which was the next in students accounting for 16.19%. Most of hepatitis A cases was occurred in December (238 cases, 10.62%), the next was in July (220 cases, 9.81%), and the lowest was in February (135 cases, 6.02%). The correlation coefficient between the incidence of hepatitis A and the qualified rate of total coliform bacteria was 0.152 (P > 0.05).
Conclusion The incidence of hepatitis A displayed a decreasing trend from 2006 to 2016 in Lanzhou city, and the population in elder age group and peasants were the key targets of prevention and treatment.
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