Levels of hepatitis B antibody titers are affected by age and doses gap time in children from a high endemic area of the western Amazon
Fig 2
Anti-HBs titer categorized by age.
Children were categorized by anti-HBs antibodies and age. Bar chart displaying number of children according to categories of anti-HBs (<10; 10–99; ≥100 IU/L) across the age (< 3; 3; 4; ≥5 years).