Pattern of vaccination delivery around COVID-19 lockdown in Nigeria.

COVID-19 pandemic has affected the world, including developing countries in various aspects. This pandemic might have severe consequences in terms of population health, especially in places where the health system is already weak. Using the health facility-level data over time, we evaluated the impact of COVID-19 lockdown on the vaccination service delivery in Nigeria. The lockdown was announced on March 30, 2020 and was effective until May 4, 2020. Compared to the quantity of vaccinations administered in March 2020, the quantity was significantly reduced during April 2020. The quantity was further reduced during May 2020. However, from June onwards, the quantity of vaccination administered has recovered. We observed that, although the lockdown reduced the quantity of vaccination administered significantly, it quickly recovered soon after the lockdown was relaxed.