[Differences between Italians and immigrants in COVID-19 vaccination coverage in the Reggio Emilia resident population (Emilia-Romagna Region, Northern Italy)].

The present work describes the cumulative coverage curves by country of birth, sex, age, and area of residence of the adult population residing in the province of Reggio Emilia (Emilia-Romagna Region, Northern Italy).The analyses are stratified by country of birth into HDC (Highly Developed Country), mostly Italians, and HMPC (Highly Migration Pressure Country), as a proxy of migrant status, excluding deaths. Vaccinations carried out up to September 2022 and recorded in the information system were considered, including vaccinations performed outside the province. Vaccinations done abroad are not included when the information is incomplete or the type of vaccine is different from those administered in Italy.Vaccination coverage (%) by number of doses and estimated Hazard Ratio (HR) and related 95% confidence intervals (95%CI) are calculated using Cox models, adjusted for age and stratified by sex.A lower vaccination coverage was detected, delayed by a few weeks, among HMPC, but the differences in vaccination coverage are reversed when the different age structure of the two populations is taken into account. From the estimates of the Cox models, a higher propensity to vaccinate was noted among immigrants, in particular among women (women HR: 1.65; CI95% 1.52-1.78; men HR: 1.39; CI95% 1.28-1.52). Women were vaccinated first, but, at the end of the observation period, there were no particular differences in coverage between the two sexes, either among Italians or immigrants. Focusing on the area of origin, a strong propensity for vaccination was noted, particularly among who came from North Africa. In the mountain areas of the province, a lower propensity for vaccination was observed, perhaps explained by the greater distance of the vaccination centers or by a lower acceptability of the vaccine.