The data source for this dataset is the NI Vaccine Management System (VMS). VMS holds vaccination reports for COVID-19 and influenza vaccines which were either administered in NI or to NI residents. This dataset is an aggregated summary of COVID-19 vaccinations recorded in VMS. It is effectively a day-by-day count of living people vaccinated by dose, age band (on the day that the dataset was extracted from VMS) and LGD of residence. Aggregated summary data from VMS is published daily to the [NI COVID-19 Vaccinations Dashboard](https://covid-19.hscni.net/ni-covid-19-vaccinations-dashboard/). This dataset is updated weekly and allows NI vaccination coverage to be included in the [GOV.UK Coronavirus (COVID-19) in the UK dashboard](https://coronavirus.data.gov.uk/).