The immunization coverage of important vaccines like BCG, DPT-Hi + Hb 3 and measles/rubella was 28.6(23.4–33.9)%, 22.8 (18.1–27.6)% and 14.3 (10.3–18.1)% respectively in the age group 12–23 months. Here, GSTM1 is linked to rubella.