Background: The COVID-19 pandemic has caused signicant disruptions in the delivery of essential primary health care services including routine immunization services in various countries including India. This temporary interference can lead to soaring of vaccine preventable illnesses. The recent outbreak of Measles worldwide in the last 12 months depicts a clear picture for a secondary health crisis. So, this study brings forth the impact of pandemic on the routine childhood immunizations in primary health care sectors of Ahmedabad, India and developing appropriate strategies to ensure continuity of services. A retrospective observational study wasMethods: carried out at the Urban primary health centers distributed across the seven zones/wards of Ahmedabad region and data of children (under 5 years) registered and vaccinated as per universal immunization Programme schedule were retrieved for a period of four years and divided into two comparison groups as pre covid sessions (1st January 2018 till 31st December 2019) and post covid sessions (1st January 2020 till 31st December 2021). The vaccination trends were compared for these two periods and analyzed. Routine childhood immunizationResults: coverage (among 0 to 5 years old children group) following the pandemic depicted a declining trend with a major set-back recorded in pentavalent and MR vaccination coverage (fall of 40%). Full immunization coverage falls short by 30% (95%+ 2.4% versus 66%+ 3.1%) and it was signicant with p<0.05 and chi square value of 27.7. Barriers to effective routine immunizations have also been enumerated with pandemic related anxiety and difculty in community mobilizations being most common. It is quite evident that the Covid-19 pandemic hasConclusions: been a major backslider for the routine childhood immunizations in India which needs immediate redressal to prevent the outbreaks of vaccine preventable diseases in future.