Changes in the epidemiology of hepatitis A: Clinical and preventive implications

Nora Mariela Martínez Ramírez,Alejandro González Praetorius, Yolanda Martínez Benito, María Victoria García Rivera, Begoña Caballero López,Miguel Torralba González de Suso

Gastroenterología y Hepatología (English Edition)(2023)

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摘要
Introduction and objectives: Hepatitis A Virus Infection (HAI) has been related to the hygienic -sanitary situation of an area, the changes in the epidemiology of HAI in the province of Guadalajara between 1991 and 2017 are analyzed. Materials and methods: Cases of HAI declared between 1991 and 2017 in Guadalajara were included. The variables analyzed were age, sex, environment, risk factors for HAI and need for hospitalization. The incidence was compared in three periods: 1991-1999, 2000--2008 and 2009-2017. Results: Two hundred and thirty-three cases of HAI were declared, the average incidence rate was 4.27 cases/100,000 inhabitants, highest between 1991 and 1999 (6.93) and lowest between 2009 and 2017 (1.92), with an increment in 2017 (5.5). The median age was 16 years (IR: 8.5-28.5 years), 58.4% were male, and the highest incidence occurred between 5 and 14 years in both sexes. The most frequent risk factors were family and non-family contact and trips to endemic areas (18.6%, 17.3% and 18.2%, respectively). The last risk factor increased after 2000 (P=.001), as did the incidence in urban areas. The MSM group showed an increase in the last period (P<.001). Hospital admissions increased progressively from the first to the third period studied (P=.001). Conclusions: HAI has a low incidence in our area. More cases related to travel or sexual prac-tices are observed. This should be considered when establishing prevention policies, including vaccination of the most exposed people. (c) 2022 Elsevier Espana, S.L.U. All rights reserved.
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关键词
Hepatitis A, Epidemiology, Outbreaks, Risk groups
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