Aim: To determine the immunization status of children 0 to 2 years and factors leading to low vaccination status in children visiting tertiary care center.

Study design: Cross-sectional study

Place and duration of study: Department of Paediatrics Shaikh Zayed Hospital Lahore from 1st November 2019 to 31st April 2020.

Methodology: Five hundred children age between 0-2 years were enrolled after fulfilling inclusion and exclusion criteria.

Results: The mean age was 9.9±6.1 months, with mean weight of 7.4±3.4 kg and 200 (40%) were male and 300 (60%) were female patients. Sixty (12%) were not vaccinated, 145 (29%) partially vaccinated and 295 (59%) fully vaccinated. In the distribution by income level 255 (51%),180 (36%) and 65 (13%) parents were having low, middle and high income respectively; By education level,155 (31%) with no education, 140 (28%) some education and 205 (41%) with high education, regarding knowledge of immunization, 50 (10%) had no knowledge, 215 (43% )had wrong perception of immunization and 235 (47%) were fully aware.295 (59%) had up-to-date immunization

Conclusion: More than half of the study populations were upto date about immunization status. It is also concluded that majority of parents of low-income level and uneducated were unknown about immunization status and majority of middle and high-income level and educated people were partial known or up-to-date about immunization status

Keywords: Economical level, Educational level, Awareness level, Immunization status