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The seroepidemiology of Hepatitis A virus in Amman, Jordan
1Department of Medical Laboratory Sciences, Faculty of Allied Health Sciences, Hashemite University, Jordan.
Insights
Hepatitis A virus (HAV) infections show seasonal patterns, peaking in spring and summer. Children aged 5-14 years were most affected by HAV in Jordan between 1991-2001.
Area of Science:
- Hepatology
- Virology
- Public Health Epidemiology
Background:
- Hepatitis A virus (HAV) poses a significant public health challenge in the Middle East, including Jordan.
- Understanding HAV epidemiology is crucial for targeted public health interventions.
Purpose of the Study:
- To analyze the epidemiological trends of Hepatitis A virus infections in Jordan.
- To identify variations in HAV cases based on year, season, age, sex, and geographic district.
Main Methods:
- Retrospective analysis of 1015 diagnosed Hepatitis A cases from January 1991 to December 2001.
- Data collected from seventeen private laboratories across the Governorate of Amman, Jordan.
- Statistical analysis to determine significant variations in HAV incidence.
Main Results:
- Significant yearly variations in HAV cases were observed (P=0.03), with the highest incidence in 1993 and lowest in 2001.
- HAV cases exhibited seasonal variation, with peaks in spring and summer months (P<0.001).
- Age group 5-14 years had the highest number of cases (16.4%), and no significant sex variation was found (P=0.28).
Conclusions:
- HAV infection occurrence is linked to age groups, year, and month in Jordan.
- Epidemiological surveillance is essential for understanding and controlling Hepatitis A outbreaks.
- Public health strategies should consider seasonal and age-specific risk factors for HAV prevention.
Abstract:
Hepatitis A virus (HAV) has emerged as an important public health problem in many countries of the Middle East region and Jordan is no exception. From January 1991 to December 2001, a total of 1015 patients were diagnosed at Al-Battikhi Medical Laboratories. Samples were collected at seventeen private laboratories distributed throughout areas of the Governorate of Amman (capital of Jordan). A significant variation (P=0.03) was obtained between number of HAV cases and year. Seasonal variation in HAV cases was seen throughout the study period with maximal rates in the spring and summer months (P<0.001). The highest incidence rate (9.6/100,000 population) was detected in the year 1993 and the lowest incidence rate (1.1/100,000 population) was found in the year 2001. There was a significant difference (P<0.0001) between number of HAV cases and age group. The highest number of cases 166 (16.4%) was reported for age group 5-14 years and the lowest number of cases 18 (0.02%). Male to female ratio was 1.25: 1. There was no significant sex variation (P=0.28). A significant variation (P=0.006) was observed between number of HAV cases and districts. The present results suggested a link between the age groups, year, month and occurrence of HAV infection. Male to female ratio indicates no significant sex variation.
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