A 10 year-old child received one dose of the hepatitis A vaccine at 1 year of age, but never returned for a second dose. Which of the following is true regarding the need for a second dose of the hepatitis A vaccine for this child?
A. No further doses of hepatitis A vaccine are required
B. Wait until the child is 18 years of age and give the second dose if there are other risk factors
C. Give 1 dose now as catch up
D. Restart the series and give 2 doses , 6 months apart