Increase of tuberculosis incidence in Ile-de-France region and the role of recent migration

Abstract

Abstract Background In metropolitan France and in the Ile-de-France region, the incidence of tuberculosis has globally decreased since the year 2000 and has stabilized from 2011 to 2015. This study analysed the evolution of tuberculosis in the Ile-de-France region between 2015 and 2017. Methods We analysed tuberculosis cases reported in Ile-de-France from 2015 to 2017; 2015 was considered as the baseline year. Incidence rates of reported tuberculosis cases were estimated using French census data for the corresponding year for the denominator. Age-standardized rates were estimated for each of the 8 departments of the region based on the Ile-de-France region population. Foreigners’ population was based on the 2015 French census data. Differences in incidence and proportions were tested with the CHI2 statistic (STATA® v14.0). Results The incidence of tuberculosis increased in the Ile-de-France region from 14.6 to 15.8/100 000 pop. between 2015 and 2017 (+8.2%, p < 0.01). In this region, all department’s incidence were above 10/100 000 pop. in 2017. Sub-regional disparities were observed, with an important increase of the incidence in Paris, from 13,5 to 16.8/100 000 pop. between 2015 and 2017 (p < 0,01). The incidence rates among foreigners increased from 44.6 to 51.7/100 000 pop. (p < 0.01) and the proportion of tuberculosis cases among foreigners who arrived in France less than 2 years ago increased from 23% to 32% (p < 0.01), between 2015 and 2017. The incidence rates of tuberculosis cases increased particularly in men, foreigners, and recent migrants. Conclusions The incidence of tuberculosis increased in the Ile-de-France region in 2016 and 2017, particularly in newly arrived migrants. This situation requires actions to better detect and manage tuberculosis in this specific population. Key messages The incidence of tuberculosis increased in the Ile-de-France region. The incidence of tuberculosis increased in vulnerable population in relation with recent migration.