Cotugno Sergio , Guido Giacomo , Segala Francesco Vladimiro , Frallonardo Luisa , Papagni Roberta , Giliberti Vincenzo , Polizzotto Carla , Di Franco Giuseppina , Piccione Ercole , Affronti Marco , Gualano Gina , Palmieri Fabrizio , Barbagallo Mario , Veronese Nicola , Saracino Annalisa , Di Gennaro Francesco
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Abstract
Objectives
Migration status refers to socioeconomic factors that challenge access to the health care system and increase the risk of developing tuberculosis (TB) with worse outcomes. This systematic review and meta-analysis aimed to investigate the outcomes of TB among international migrants arriving in Europe compared with the nonmigrant population.
Methods
A systematic review and meta-analysis were conducted to identify studies investigating TB-related outcomes among migrants and nonmigrants in Europe. Six investigators searched PubMed, Scopus, and Web of Science from inception to March 2024 and screened the abstracts of potentially eligible articles. Studies reporting TB-related outcomes in both migrants and nonmigrants were also included. Studies with migrant definitions other than the one from the inclusion criteria, with no control group, and with no discernible data, including nonhuman samples or written in a non-English language, were excluded. Data were reported as relative risks (RRs) or odds ratios with their 95% confidence intervals (CIs). The risk of bias was assessed using the Newcastle–Ottawa Scale (PROSPERO Registration number: CRD42024529629).
Results
Of the 1,109 papers screened, 34 were included, consisting of 601,293 participants (459,670 nonmigrants and 141,623 migrants). The meta-analysis, adjusted for potential confounders, showed that migrants presented a lower mortality risk (RR = 0.391, 95% CI: 0.276-0.554; P <0.0001; I2 = 71.6%), a lower rate of treatment completion (RR = 0.313; 95% CI: 0.163-0.600; P <0.0001), and a higher rate of loss to follow-up (RR = 4.331, 95% CI: 1.542-12.163, P = 0.005; I2 = 55.8%). Treatment success, cure, not evaluated, and sustained treatment success showed no significant differences between migrants and nonmigrants. No adjusted analyses could be performed for cure, not evaluated, and sustained treatment success. Only three studies had a high risk of bias.
Conclusions
Migrants living in Europe have lower mortality rates; however, TB management is affected by a higher risk of loss to follow-up and discontinuation. Therefore, migrant-targeted TB care is necessary to improve the fight against TB in Europe.
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