Definition
For children born in the 3 to 5 years before the survey, VACHIB2 (H65) indicates whether the child has received the second in a series of Haemophilus influenzae type b vaccinations. The Haemophilus influenzae type b vaccination is frequently given as an injection in the upper left arm, often at the same time as the DPT injections or polio drops.
The Haemophilus influenzae type b vaccination primary series usually consists of 3 administrations, and the complementary variables VACHIB1 (H64) and VACHIB3 (H66) report the first and third administrations, respectively.
VACHIB2 uses composite coding, with a first digit of 2 indicating the child has been vaccinated and the second digit indicating the source of information (a dated entry on the vaccination card, an undated mark on the vaccination card, or the mother's report).