Background: Hepatitis A vaccine was first required for children entering school in
Objectives: To determine how the epidemiology of hepatitis A has evolved in Texas since the introduction of the vaccine, with special focus on 2008 data to establish a baseline to evaluate the newly established vaccine requirements.
Methods: Descriptive statistics for hepatitis A surveillance data over the last 14 years were analyzed to determine differences in the distribution of hepatitis A in 1995 compared to 2008.
Results: The overall incidence rate (cases per 100,000 population) in 1995 was 16.0 (n=3001) compared to 1.1 in 2008 (n=259). The highest incidence rate occurred in the 5-9 year age range (IR=47.4) in 1995. The incidence rates were lower for each age group in 2008 with the highest incident rate found in the 60+ age range (IR=1.76). Hispanics accounted for 62% of cases in 1995, but only 28% in 2008.
Conclusions: Vaccination strategies thus far have been successful in lowering the incidence of hepatitis A in