time between hep a doses
Three hepatitis B vaccine schedules have been shown to induce levels of seroprotection of greater than 95% in infants. One schedule uses an initial dose administered at birth, followed by doses at 1 and 6 months of age. The next schedule has doses given at 2, 4, and 6 months of age. The third schedule is for vaccine given at 6, 10, and 14 weeks of age.